53390863236591 has 20 divisors (see below), whose sum is σ = 79916554795000. Its totient is φ = 35522578318896.

The previous prime is 53390863236559. The next prime is 53390863236617. The reversal of 53390863236591 is 19563236809335.

53390863236591 is a `hidden beast` number, since 5 + 3 + 3 + 9 + 0 + 8 + 6 + 3 + 2 + 36 + 591 = 666.

It is not a de Polignac number, because 53390863236591 - 2⁵ = 53390863236559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53390863236511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 660426976 + ... + 660507813.

It is an arithmetic number, because the mean of its divisors is an integer number (3995827739750).

Almost surely, 2^{53390863236591} is an apocalyptic number.

53390863236591 is a deficient number, since it is larger than the sum of its proper divisors (26525691558409).

53390863236591 is a wasteful number, since it uses less digits than its factorization.

53390863236591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320935300 (or 1320935291 counting only the distinct ones).

The product of its (nonzero) digits is 94478400, while the sum is 63.

The spelling of 53390863236591 in words is "fifty-three trillion, three hundred ninety billion, eight hundred sixty-three million, two hundred thirty-six thousand, five hundred ninety-one".