70156705672 has 32 divisors (see below), whose sum is σ = 131945588280. Its totient is φ = 34971381760.

The previous prime is 70156705657. The next prime is 70156705681. The reversal of 70156705672 is 27650765107.

It can be written as a sum of positive squares in 4 ways, for example, as 23946324516 + 46210381156 = 154746^2 + 214966^2 .

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 7 ways as a sum of consecutive naturals, for example, 3600468 + ... + 3619900.

Almost surely, 2^70156705672 is an apocalyptic number.

It is an amenable number.

70156705672 is a deficient number, since it is larger than the sum of its proper divisors (61788882608).

70156705672 is a wasteful number, since it uses less digits than its factorization.

70156705672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20793 (or 20789 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 70156705672 in words is "seventy billion, one hundred fifty-six million, seven hundred five thousand, six hundred seventy-two".