53968508531 has 4 divisors (see below), whose sum is σ = 61678295472. Its totient is φ = 46258721592.

The previous prime is 53968508513. The next prime is 53968508563. The reversal of 53968508531 is 13580586935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53968508531 - 2²² = 53964314227 is a prime.

It is a super-2 number, since 2×53968508531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53968502531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3854893460 + ... + 3854893473.

It is an arithmetic number, because the mean of its divisors is an integer number (15419573868).

Almost surely, 2^53968508531 is an apocalyptic number.

53968508531 is a deficient number, since it is larger than the sum of its proper divisors (7709786941).

53968508531 is an equidigital number, since it uses as much as digits as its factorization.

53968508531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709786940.

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 53968508531 in words is "fifty-three billion, nine hundred sixty-eight million, five hundred eight thousand, five hundred thirty-one".