70172731365402 has 32 divisors (see below), whose sum is σ = 140710895582400. Its totient is φ = 23330008953728.

The previous prime is 70172731365389. The next prime is 70172731365403. The reversal of 70172731365402 is 20456313727107.

It is not an unprimeable number, because it can be changed into a prime (70172731365403) 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, 72477598 + ... + 73439414.

It is an arithmetic number, because the mean of its divisors is an integer number (4397215486950).

Almost surely, 2^{70172731365402} is an apocalyptic number.

70172731365402 is an abundant number, since it is smaller than the sum of its proper divisors (70538164216998).

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

70172731365402 is a wasteful number, since it uses less digits than its factorization.

70172731365402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993470.

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 70172731365402 in words is "seventy trillion, one hundred seventy-two billion, seven hundred thirty-one million, three hundred sixty-five thousand, four hundred two".