172572143696 has 20 divisors (see below), whose sum is σ = 339839817684. Its totient is φ = 84871545600.

The previous prime is 172572143659. The next prime is 172572143701. The reversal of 172572143696 is 696341275271.

It can be written as a sum of positive squares in 2 ways, for example, as 47089000000 + 125483143696 = 217000^2 + 354236^2 .

It is a super-2 number, since 2×172572143696² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 88406885 + ... + 88408836.

Almost surely, 2^172572143696 is an apocalyptic number.

172572143696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172572143696 is a deficient number, since it is larger than the sum of its proper divisors (167267673988).

172572143696 is a wasteful number, since it uses less digits than its factorization.

172572143696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176815790 (or 176815784 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 53.

The spelling of 172572143696 in words is "one hundred seventy-two billion, five hundred seventy-two million, one hundred forty-three thousand, six hundred ninety-six".