70636970640 has 80 divisors (see below), whose sum is σ = 231855481728. Its totient is φ = 17728493568.

The previous prime is 70636970639. The next prime is 70636970671. The reversal of 70636970640 is 4607963607.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 70636970640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8652412 + ... + 8660571.

Almost surely, 2^70636970640 is an apocalyptic number.

It is an amenable number.

70636970640 is an abundant number, since it is smaller than the sum of its proper divisors (161218511088).

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

70636970640 is a wasteful number, since it uses less digits than its factorization.

70636970640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17313016 (or 17313010 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 70636970640 in words is "seventy billion, six hundred thirty-six million, nine hundred seventy thousand, six hundred forty".