172937056451 has 2 divisors, whose sum is σ = 172937056452. Its totient is φ = 172937056450.

The previous prime is 172937056447. The next prime is 172937056469. The reversal of 172937056451 is 154650739271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172937056451 - 2² = 172937056447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172937056451.

It is not a weakly prime, because it can be changed into another prime (172937056471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86468528225 + 86468528226.

It is an arithmetic number, because the mean of its divisors is an integer number (86468528226).

Almost surely, 2^172937056451 is an apocalyptic number.

172937056451 is a deficient number, since it is larger than the sum of its proper divisors (1).

172937056451 is an equidigital number, since it uses as much as digits as its factorization.

172937056451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 172937056451 in words is "one hundred seventy-two billion, nine hundred thirty-seven million, fifty-six thousand, four hundred fifty-one".