135899963136 has 144 divisors (see below), whose sum is σ = 459291705600. Its totient is φ = 38828547072.

The previous prime is 135899963131. The next prime is 135899963159. The reversal of 135899963136 is 631369998531.

135899963136 is a `hidden beast` number, since 1 + 358 + 9 + 99 + 63 + 136 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135899963131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356006 + ... + 1452773.

Almost surely, 2^135899963136 is an apocalyptic number.

135899963136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135899963136 is an abundant number, since it is smaller than the sum of its proper divisors (323391742464).

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

135899963136 is an equidigital number, since it uses as much as digits as its factorization.

135899963136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808811 (or 2808791 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The spelling of 135899963136 in words is "one hundred thirty-five billion, eight hundred ninety-nine million, nine hundred sixty-three thousand, one hundred thirty-six".