70991170928 has 20 divisors (see below), whose sum is σ = 138389235528. Its totient is φ = 35277819840.

The previous prime is 70991170903. The next prime is 70991170967. The reversal of 70991170928 is 82907119907.

It is a super-3 number, since 3×70991170928³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70991170928.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13607663 + ... + 13612878.

Almost surely, 2^70991170928 is an apocalyptic number.

It is an amenable number.

70991170928 is a deficient number, since it is larger than the sum of its proper divisors (67398064600).

70991170928 is a wasteful number, since it uses less digits than its factorization.

70991170928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27220712 (or 27220706 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 53.

The spelling of 70991170928 in words is "seventy billion, nine hundred ninety-one million, one hundred seventy thousand, nine hundred twenty-eight".