136638860860 has 24 divisors (see below), whose sum is σ = 288701992656. Its totient is φ = 54320232960.

The previous prime is 136638860821. The next prime is 136638860873. The reversal of 136638860860 is 68068836631.

It is a congruent number.

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, 20953621 + ... + 20960140.

It is an arithmetic number, because the mean of its divisors is an integer number (12029249694).

Almost surely, 2^136638860860 is an apocalyptic number.

136638860860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136638860860 is an abundant number, since it is smaller than the sum of its proper divisors (152063131796).

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

136638860860 is a wasteful number, since it uses less digits than its factorization.

136638860860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41913933 (or 41913931 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 136638860860 in words is "one hundred thirty-six billion, six hundred thirty-eight million, eight hundred sixty thousand, eight hundred sixty".