57947446369 has 2 divisors, whose sum is σ = 57947446370. Its totient is φ = 57947446368.

The previous prime is 57947446351. The next prime is 57947446397. The reversal of 57947446369 is 96364474975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40401000000 + 17546446369 = 201000^2 + 132463^2 .

It is a cyclic number.

It is not a de Polignac number, because 57947446369 - 2¹⁷ = 57947315297 is a prime.

It is a super-2 number, since 2×57947446369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57947446369.

It is not a weakly prime, because it can be changed into another prime (57947446339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28973723184 + 28973723185.

It is an arithmetic number, because the mean of its divisors is an integer number (28973723185).

Almost surely, 2^57947446369 is an apocalyptic number.

It is an amenable number.

57947446369 is a deficient number, since it is larger than the sum of its proper divisors (1).

57947446369 is an equidigital number, since it uses as much as digits as its factorization.

57947446369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 64.

The spelling of 57947446369 in words is "fifty-seven billion, nine hundred forty-seven million, four hundred forty-six thousand, three hundred sixty-nine".