136491799572 has 48 divisors (see below), whose sum is σ = 363431629120. Its totient is φ = 44267609376.

The previous prime is 136491799559. The next prime is 136491799663. The reversal of 136491799572 is 275997194631.

136491799572 is a `hidden beast` number, since 1 + 3 + 6 + 49 + 17 + 9 + 9 + 572 = 666.

It is a super-2 number, since 2×136491799572² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17074558 + ... + 17082549.

Almost surely, 2^136491799572 is an apocalyptic number.

136491799572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136491799572 is an abundant number, since it is smaller than the sum of its proper divisors (226939829548).

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

136491799572 is a wasteful number, since it uses less digits than its factorization.

136491799572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34157157 (or 34157149 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The spelling of 136491799572 in words is "one hundred thirty-six billion, four hundred ninety-one million, seven hundred ninety-nine thousand, five hundred seventy-two".