70666157872 has 20 divisors (see below), whose sum is σ = 144969545016. Its totient is φ = 33254662400.

The previous prime is 70666157869. The next prime is 70666157897. The reversal of 70666157872 is 27875166607.

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, 129900754 + ... + 129901297.

Almost surely, 2^70666157872 is an apocalyptic number.

It is an amenable number.

70666157872 is an abundant number, since it is smaller than the sum of its proper divisors (74303387144).

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

70666157872 is a wasteful number, since it uses less digits than its factorization.

70666157872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259802076 (or 259802070 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 70666157872 in words is "seventy billion, six hundred sixty-six million, one hundred fifty-seven thousand, eight hundred seventy-two".