57564453493 has 2 divisors, whose sum is σ = 57564453494. Its totient is φ = 57564453492.

The previous prime is 57564453431. The next prime is 57564453497. The reversal of 57564453493 is 39435446575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56654948529 + 909504964 = 238023^2 + 30158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57564453493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57564453497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28782226746 + 28782226747.

It is an arithmetic number, because the mean of its divisors is an integer number (28782226747).

Almost surely, 2^57564453493 is an apocalyptic number.

It is an amenable number.

57564453493 is a deficient number, since it is larger than the sum of its proper divisors (1).

57564453493 is an equidigital number, since it uses as much as digits as its factorization.

57564453493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216000, while the sum is 55.

The spelling of 57564453493 in words is "fifty-seven billion, five hundred sixty-four million, four hundred fifty-three thousand, four hundred ninety-three".