126277187500 has 96 divisors (see below), whose sum is σ = 288257074560. Its totient is φ = 48312000000.

The previous prime is 126277187473. The next prime is 126277187507. The reversal of 126277187500 is 5781772621.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (126277187507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7178716 + ... + 7196284.

It is an arithmetic number, because the mean of its divisors is an integer number (3002677860).

Almost surely, 2^126277187500 is an apocalyptic number.

126277187500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126277187500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144128537280).

126277187500 is an abundant number, since it is smaller than the sum of its proper divisors (161979887060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126277187500 is an frugal number, since it uses more digits than its factorization.

126277187500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631 (or 17599 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 46.

The spelling of 126277187500 in words is "one hundred twenty-six billion, two hundred seventy-seven million, one hundred eighty-seven thousand, five hundred".