56837557493 has 2 divisors, whose sum is σ = 56837557494. Its totient is φ = 56837557492.

The previous prime is 56837557481. The next prime is 56837557537. The reversal of 56837557493 is 39475573865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49451530129 + 7386027364 = 222377^2 + 85942^2 .

It is a cyclic number.

It is not a de Polignac number, because 56837557493 - 2⁸ = 56837557237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56837557453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28418778746 + 28418778747.

It is an arithmetic number, because the mean of its divisors is an integer number (28418778747).

Almost surely, 2^56837557493 is an apocalyptic number.

It is an amenable number.

56837557493 is a deficient number, since it is larger than the sum of its proper divisors (1).

56837557493 is an equidigital number, since it uses as much as digits as its factorization.

56837557493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256000, while the sum is 62.

The spelling of 56837557493 in words is "fifty-six billion, eight hundred thirty-seven million, five hundred fifty-seven thousand, four hundred ninety-three".