32172377557 has 2 divisors, whose sum is σ = 32172377558. Its totient is φ = 32172377556.

The previous prime is 32172377539. The next prime is 32172377569. The reversal of 32172377557 is 75577327123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20256690276 + 11915687281 = 142326^2 + 109159^2 .

It is a cyclic number.

It is not a de Polignac number, because 32172377557 - 2⁷ = 32172377429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32172377557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32176377557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16086188778 + 16086188779.

It is an arithmetic number, because the mean of its divisors is an integer number (16086188779).

Almost surely, 2^32172377557 is an apocalyptic number.

It is an amenable number.

32172377557 is a deficient number, since it is larger than the sum of its proper divisors (1).

32172377557 is an equidigital number, since it uses as much as digits as its factorization.

32172377557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160900, while the sum is 49.

The spelling of 32172377557 in words is "thirty-two billion, one hundred seventy-two million, three hundred seventy-seven thousand, five hundred fifty-seven".