135899997996 has 48 divisors (see below), whose sum is σ = 362484034304. Its totient is φ = 38819566656.

The previous prime is 135899997971. The next prime is 135899998001. The reversal of 135899997996 is 699799998531.

It is a Harshad number since it is a multiple of its sum of digits (84).

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, 181086 + ... + 551898.

Almost surely, 2^135899997996 is an apocalyptic number.

It is an amenable number.

135899997996 is an abundant number, since it is smaller than the sum of its proper divisors (226584036308).

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

135899997996 is a wasteful number, since it uses less digits than its factorization.

135899997996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375190 (or 375188 counting only the distinct ones).

The product of its digits is 2678462640, while the sum is 84.

The spelling of 135899997996 in words is "one hundred thirty-five billion, eight hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred ninety-six".