53257243466499 has 16 divisors (see below), whose sum is σ = 71982797368224. Its totient is φ = 35018264736000.

The previous prime is 53257243466447. The next prime is 53257243466521. The reversal of 53257243466499 is 99466434275235.

It is a de Polignac number, because none of the positive numbers 2^k-53257243466499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53257243476499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45504349 + ... + 46660049.

It is an arithmetic number, because the mean of its divisors is an integer number (4498924835514).

Almost surely, 2^{53257243466499} is an apocalyptic number.

53257243466499 is a deficient number, since it is larger than the sum of its proper divisors (18725553901725).

53257243466499 is a wasteful number, since it uses less digits than its factorization.

53257243466499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366198.

The product of its digits is 1175731200, while the sum is 69.

The spelling of 53257243466499 in words is "fifty-three trillion, two hundred fifty-seven billion, two hundred forty-three million, four hundred sixty-six thousand, four hundred ninety-nine".