136720229540 has 24 divisors (see below), whose sum is σ = 287391004992. Its totient is φ = 54635039840.

The previous prime is 136720229509. The next prime is 136720229567. The reversal of 136720229540 is 45922027631.

It is a super-2 number, since 2×136720229540² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3294614 + ... + 3335853.

It is an arithmetic number, because the mean of its divisors is an integer number (11974625208).

Almost surely, 2^136720229540 is an apocalyptic number.

136720229540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136720229540 is an abundant number, since it is smaller than the sum of its proper divisors (150670775452).

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

136720229540 is a wasteful number, since it uses less digits than its factorization.

136720229540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631507 (or 6631505 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 136720229540 in words is "one hundred thirty-six billion, seven hundred twenty million, two hundred twenty-nine thousand, five hundred forty".