136657318506 has 16 divisors (see below), whose sum is σ = 275466722304. Its totient is φ = 45193758624.

The previous prime is 136657318477. The next prime is 136657318519. The reversal of 136657318506 is 605813756631.

It is a happy 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, 89669395 + ... + 89670918.

It is an arithmetic number, because the mean of its divisors is an integer number (17216670144).

Almost surely, 2^136657318506 is an apocalyptic number.

136657318506 is an abundant number, since it is smaller than the sum of its proper divisors (138809403798).

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

136657318506 is a wasteful number, since it uses less digits than its factorization.

136657318506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179340445.

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 136657318506 in words is "one hundred thirty-six billion, six hundred fifty-seven million, three hundred eighteen thousand, five hundred six".