136690468920 has 64 divisors (see below), whose sum is σ = 455634900000. Its totient is φ = 36450791424.

The previous prime is 136690468907. The next prime is 136690468961. The reversal of 136690468920 is 29864096631.

136690468920 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 90 + 468 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63281545 + ... + 63283704.

Almost surely, 2^136690468920 is an apocalyptic number.

136690468920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136690468920 is an abundant number, since it is smaller than the sum of its proper divisors (318944431080).

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

136690468920 is a wasteful number, since it uses less digits than its factorization.

136690468920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126565269 (or 126565259 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 136690468920 in words is "one hundred thirty-six billion, six hundred ninety million, four hundred sixty-eight thousand, nine hundred twenty".