70990640320 has 28 divisors (see below), whose sum is σ = 169046463024. Its totient is φ = 28396256000.

The previous prime is 70990640299. The next prime is 70990640351. The reversal of 70990640320 is 2304609907.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110922556 + ... + 110923195.

Almost surely, 2^70990640320 is an apocalyptic number.

It is an amenable number.

70990640320 is an abundant number, since it is smaller than the sum of its proper divisors (98055822704).

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

70990640320 is a wasteful number, since it uses less digits than its factorization.

70990640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221845768 (or 221845758 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 70990640320 in words is "seventy billion, nine hundred ninety million, six hundred forty thousand, three hundred twenty".