135087981952 has 64 divisors (see below), whose sum is σ = 335526992640. Its totient is φ = 52631677440.

The previous prime is 135087981929. The next prime is 135087981961. The reversal of 135087981952 is 259189780531.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6843228 + ... + 6862939.

It is an arithmetic number, because the mean of its divisors is an integer number (5242609260).

Almost surely, 2^135087981952 is an apocalyptic number.

It is an amenable number.

135087981952 is an abundant number, since it is smaller than the sum of its proper divisors (200439010688).

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

135087981952 is a wasteful number, since it uses less digits than its factorization.

135087981952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13706199 (or 13706187 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 135087981952 in words is "one hundred thirty-five billion, eighty-seven million, nine hundred eighty-one thousand, nine hundred fifty-two".