70688156512 has 24 divisors (see below), whose sum is σ = 139291968816. Its totient is φ = 35312418432.

The previous prime is 70688156479. The next prime is 70688156543. The reversal of 70688156512 is 21565188607.

It is a super-2 number, since 2×70688156512² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 953068 + ... + 1024555.

It is an arithmetic number, because the mean of its divisors is an integer number (5803832034).

Almost surely, 2^70688156512 is an apocalyptic number.

It is an amenable number.

70688156512 is a deficient number, since it is larger than the sum of its proper divisors (68603812304).

70688156512 is a wasteful number, since it uses less digits than its factorization.

70688156512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978750 (or 1978742 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 70688156512 in words is "seventy billion, six hundred eighty-eight million, one hundred fifty-six thousand, five hundred twelve".