70431640173 has 24 divisors (see below), whose sum is σ = 102140313600. Its totient is φ = 46767301344.

The previous prime is 70431640157. The next prime is 70431640177. The reversal of 70431640173 is 37104613407.

70431640173 is a `hidden beast` number, since 7 + 0 + 4 + 3 + 1 + 640 + 1 + 7 + 3 = 666.

It is not a de Polignac number, because 70431640173 - 2⁴ = 70431640157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70431640177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12758908 + ... + 12764426.

It is an arithmetic number, because the mean of its divisors is an integer number (4255846400).

Almost surely, 2^70431640173 is an apocalyptic number.

It is an amenable number.

70431640173 is a deficient number, since it is larger than the sum of its proper divisors (31708673427).

70431640173 is a wasteful number, since it uses less digits than its factorization.

70431640173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921 (or 10918 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 70431640173 in words is "seventy billion, four hundred thirty-one million, six hundred forty thousand, one hundred seventy-three".