136635036520 has 32 divisors (see below), whose sum is σ = 307534993920. Its totient is φ = 54635141440.

The previous prime is 136635036493. The next prime is 136635036529. The reversal of 136635036520 is 25630536631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (136635036529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472216 + ... + 704455.

It is an arithmetic number, because the mean of its divisors is an integer number (9610468560).

Almost surely, 2^136635036520 is an apocalyptic number.

136635036520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136635036520 is an abundant number, since it is smaller than the sum of its proper divisors (170899957400).

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

136635036520 is a wasteful number, since it uses less digits than its factorization.

136635036520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179585 (or 1179581 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 136635036520 in words is "one hundred thirty-six billion, six hundred thirty-five million, thirty-six thousand, five hundred twenty".