135397056368 has 30 divisors (see below), whose sum is σ = 305161479576. Its totient is φ = 58027309536.

The previous prime is 135397056367. The next prime is 135397056371. The reversal of 135397056368 is 863650793531.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135397056367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86349380 + ... + 86350947.

Almost surely, 2^135397056368 is an apocalyptic number.

It is an amenable number.

135397056368 is an abundant number, since it is smaller than the sum of its proper divisors (169764423208).

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

135397056368 is a wasteful number, since it uses less digits than its factorization.

135397056368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172700349 (or 172700336 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 56.

The spelling of 135397056368 in words is "one hundred thirty-five billion, three hundred ninety-seven million, fifty-six thousand, three hundred sixty-eight".