53997565791 has 32 divisors (see below), whose sum is σ = 80083763200. Its totient is φ = 32138208000.

The previous prime is 53997565777. The next prime is 53997565823. The reversal of 53997565791 is 19756579935.

It is not a de Polignac number, because 53997565791 - 2²³ = 53989177183 is a prime.

It is a super-2 number, since 2×53997565791² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53997565751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2165010 + ... + 2189808.

It is an arithmetic number, because the mean of its divisors is an integer number (2502617600).

Almost surely, 2^53997565791 is an apocalyptic number.

53997565791 is a deficient number, since it is larger than the sum of its proper divisors (26086197409).

53997565791 is a wasteful number, since it uses less digits than its factorization.

53997565791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26647.

The product of its digits is 80372250, while the sum is 66.

The spelling of 53997565791 in words is "fifty-three billion, nine hundred ninety-seven million, five hundred sixty-five thousand, seven hundred ninety-one".