53287731513 has 12 divisors (see below), whose sum is σ = 77945487360. Its totient is φ = 35075468376.

The previous prime is 53287731481. The next prime is 53287731517. The reversal of 53287731513 is 31513778235.

53287731513 is a `hidden beast` number, since 5 + 32 + 8 + 77 + 31 + 513 = 666.

It is not a de Polignac number, because 53287731513 - 2⁵ = 53287731481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53287731517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37473081 + ... + 37474502.

It is an arithmetic number, because the mean of its divisors is an integer number (6495457280).

Almost surely, 2^53287731513 is an apocalyptic number.

It is an amenable number.

53287731513 is a deficient number, since it is larger than the sum of its proper divisors (24657755847).

53287731513 is a wasteful number, since it uses less digits than its factorization.

53287731513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74947668 (or 74947665 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The spelling of 53287731513 in words is "fifty-three billion, two hundred eighty-seven million, seven hundred thirty-one thousand, five hundred thirteen".