26113372506 has 96 divisors (see below), whose sum is σ = 64658805120. Its totient is φ = 7555185792.

The previous prime is 26113372499. The next prime is 26113372507. The reversal of 26113372506 is 60527331162.

26113372506 is a `hidden beast` number, since 2 + 6 + 113 + 37 + 2 + 506 = 666.

It is not an unprimeable number, because it can be changed into a prime (26113372507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276420 + ... + 358656.

It is an arithmetic number, because the mean of its divisors is an integer number (673529220).

Almost surely, 2^26113372506 is an apocalyptic number.

26113372506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26113372506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32329402560).

26113372506 is an abundant number, since it is smaller than the sum of its proper divisors (38545432614).

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

26113372506 is a wasteful number, since it uses less digits than its factorization.

26113372506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82340 (or 82337 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 26113372506 in words is "twenty-six billion, one hundred thirteen million, three hundred seventy-two thousand, five hundred six".