53719875565 has 8 divisors (see below), whose sum is σ = 64533246840. Its totient is φ = 42929636352.

The previous prime is 53719875497. The next prime is 53719875593. The reversal of 53719875565 is 56557891735.

It can be written as a sum of positive squares in 4 ways, for example, as 4052850244 + 49667025321 = 63662^2 + 222861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53719875565 - 2²⁷ = 53585657837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5777904 + ... + 5787193.

It is an arithmetic number, because the mean of its divisors is an integer number (8066655855).

Almost surely, 2^53719875565 is an apocalyptic number.

It is an amenable number.

53719875565 is a deficient number, since it is larger than the sum of its proper divisors (10813371275).

53719875565 is a wasteful number, since it uses less digits than its factorization.

53719875565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566031.

The product of its digits is 39690000, while the sum is 61.

The spelling of 53719875565 in words is "fifty-three billion, seven hundred nineteen million, eight hundred seventy-five thousand, five hundred sixty-five".