136944921240 has 160 divisors (see below), whose sum is σ = 468089226000. Its totient is φ = 35899635456.

The previous prime is 136944921173. The next prime is 136944921257. The reversal of 136944921240 is 42129449631.

136944921240 is a `hidden beast` number, since 1 + 36 + 9 + 4 + 492 + 124 + 0 = 666.

It is a super-2 number, since 2×136944921240² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 167035 + ... + 549354.

Almost surely, 2^136944921240 is an apocalyptic number.

136944921240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136944921240 is an abundant number, since it is smaller than the sum of its proper divisors (331144304760).

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

136944921240 is a wasteful number, since it uses less digits than its factorization.

136944921240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716471 (or 716458 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 136944921240 in words is "one hundred thirty-six billion, nine hundred forty-four million, nine hundred twenty-one thousand, two hundred forty".