57281677631 has 2 divisors, whose sum is σ = 57281677632. Its totient is φ = 57281677630.

The previous prime is 57281677597. The next prime is 57281677637. The reversal of 57281677631 is 13677618275.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57281677631 is a prime.

It is a super-2 number, since 2×57281677631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57281677637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28640838815 + 28640838816.

It is an arithmetic number, because the mean of its divisors is an integer number (28640838816).

Almost surely, 2^57281677631 is an apocalyptic number.

57281677631 is a deficient number, since it is larger than the sum of its proper divisors (1).

57281677631 is an equidigital number, since it uses as much as digits as its factorization.

57281677631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The spelling of 57281677631 in words is "fifty-seven billion, two hundred eighty-one million, six hundred seventy-seven thousand, six hundred thirty-one".