53702319621 has 16 divisors (see below), whose sum is σ = 74061056000. Its totient is φ = 34577195760.

The previous prime is 53702319599. The next prime is 53702319641. The reversal of 53702319621 is 12691320735.

It is a happy number.

It is not a de Polignac number, because 53702319621 - 2²⁷ = 53568101893 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 53702319621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53702319641) 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, 532195 + ... + 625008.

It is an arithmetic number, because the mean of its divisors is an integer number (4628816000).

Almost surely, 2^53702319621 is an apocalyptic number.

It is an amenable number.

53702319621 is a deficient number, since it is larger than the sum of its proper divisors (20358736379).

53702319621 is a wasteful number, since it uses less digits than its factorization.

53702319621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157736.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 53702319621 in words is "fifty-three billion, seven hundred two million, three hundred nineteen thousand, six hundred twenty-one".