53723112661 has 16 divisors (see below), whose sum is σ = 57447895680. Its totient is φ = 50115028480.

The previous prime is 53723112643. The next prime is 53723112673. The reversal of 53723112661 is 16621132735.

It is a cyclic number.

It is not a de Polignac number, because 53723112661 - 2⁷ = 53723112533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53723112661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53723112061) 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, 2903706 + ... + 2922148.

It is an arithmetic number, because the mean of its divisors is an integer number (3590493480).

Almost surely, 2^53723112661 is an apocalyptic number.

It is an amenable number.

53723112661 is a deficient number, since it is larger than the sum of its proper divisors (3724783019).

53723112661 is a wasteful number, since it uses less digits than its factorization.

53723112661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21596.

The product of its digits is 45360, while the sum is 37.

The spelling of 53723112661 in words is "fifty-three billion, seven hundred twenty-three million, one hundred twelve thousand, six hundred sixty-one".