57261208747 has 2 divisors, whose sum is σ = 57261208748. Its totient is φ = 57261208746.

The previous prime is 57261208729. The next prime is 57261208757. The reversal of 57261208747 is 74780216275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57261208747 - 2³¹ = 55113725099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57261208747.

It is not a weakly prime, because it can be changed into another prime (57261208757) 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, 28630604373 + 28630604374.

It is an arithmetic number, because the mean of its divisors is an integer number (28630604374).

Almost surely, 2^57261208747 is an apocalyptic number.

57261208747 is a deficient number, since it is larger than the sum of its proper divisors (1).

57261208747 is an equidigital number, since it uses as much as digits as its factorization.

57261208747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 57261208747 in words is "fifty-seven billion, two hundred sixty-one million, two hundred eight thousand, seven hundred forty-seven".