32172565429 has 2 divisors, whose sum is σ = 32172565430. Its totient is φ = 32172565428.

The previous prime is 32172565319. The next prime is 32172565463. The reversal of 32172565429 is 92456527123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31470050404 + 702515025 = 177398^2 + 26505^2 .

It is a cyclic number.

It is not a de Polignac number, because 32172565429 - 2²⁷ = 32038347701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32172566429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16086282714 + 16086282715.

It is an arithmetic number, because the mean of its divisors is an integer number (16086282715).

Almost surely, 2^32172565429 is an apocalyptic number.

It is an amenable number.

32172565429 is a deficient number, since it is larger than the sum of its proper divisors (1).

32172565429 is an equidigital number, since it uses as much as digits as its factorization.

32172565429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The spelling of 32172565429 in words is "thirty-two billion, one hundred seventy-two million, five hundred sixty-five thousand, four hundred twenty-nine".