70173907979 has 16 divisors (see below), whose sum is σ = 81903192000. Its totient is φ = 60099282432.

The previous prime is 70173907961. The next prime is 70173908011. The reversal of 70173907979 is 97970937107.

It is a de Polignac number, because none of the positive numbers 2^k-70173907979 is a prime.

It is a super-2 number, since 2×70173907979² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70173907939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333377 + ... + 501485.

It is an arithmetic number, because the mean of its divisors is an integer number (5118949500).

Almost surely, 2^70173907979 is an apocalyptic number.

70173907979 is a deficient number, since it is larger than the sum of its proper divisors (11729284021).

70173907979 is a wasteful number, since it uses less digits than its factorization.

70173907979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169347 (or 169333 counting only the distinct ones).

The product of its (nonzero) digits is 5250987, while the sum is 59.

The spelling of 70173907979 in words is "seventy billion, one hundred seventy-three million, nine hundred seven thousand, nine hundred seventy-nine".