57147634493 has 2 divisors, whose sum is σ = 57147634494. Its totient is φ = 57147634492.

The previous prime is 57147634483. The next prime is 57147634501. The reversal of 57147634493 is 39443674175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47570663449 + 9576971044 = 218107^2 + 97862^2 .

It is a cyclic number.

It is not a de Polignac number, because 57147634493 - 2⁴ = 57147634477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57147634483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28573817246 + 28573817247.

It is an arithmetic number, because the mean of its divisors is an integer number (28573817247).

Almost surely, 2^57147634493 is an apocalyptic number.

It is an amenable number.

57147634493 is a deficient number, since it is larger than the sum of its proper divisors (1).

57147634493 is an equidigital number, since it uses as much as digits as its factorization.

57147634493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 53.

The spelling of 57147634493 in words is "fifty-seven billion, one hundred forty-seven million, six hundred thirty-four thousand, four hundred ninety-three".