57732431917 has 2 divisors, whose sum is σ = 57732431918. Its totient is φ = 57732431916.

The previous prime is 57732431899. The next prime is 57732431929. The reversal of 57732431917 is 71913423775.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44594458276 + 13137973641 = 211174^2 + 114621^2 .

It is a cyclic number.

It is not a de Polignac number, because 57732431917 - 2¹⁵ = 57732399149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57732431947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28866215958 + 28866215959.

It is an arithmetic number, because the mean of its divisors is an integer number (28866215959).

Almost surely, 2^57732431917 is an apocalyptic number.

It is an amenable number.

57732431917 is a deficient number, since it is larger than the sum of its proper divisors (1).

57732431917 is an equidigital number, since it uses as much as digits as its factorization.

57732431917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 49.

The spelling of 57732431917 in words is "fifty-seven billion, seven hundred thirty-two million, four hundred thirty-one thousand, nine hundred seventeen".