53723679617 has 4 divisors (see below), whose sum is σ = 55175670996. Its totient is φ = 52271688240.

The previous prime is 53723679601. The next prime is 53723679643. The reversal of 53723679617 is 71697632735.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40865026801 + 12858652816 = 202151^2 + 113396^2 .

It is a cyclic number.

It is not a de Polignac number, because 53723679617 - 2⁴ = 53723679601 is a prime.

It is a super-2 number, since 2×53723679617² (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 (53723679697) 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, 725995634 + ... + 725995707.

It is an arithmetic number, because the mean of its divisors is an integer number (13793917749).

Almost surely, 2^53723679617 is an apocalyptic number.

It is an amenable number.

53723679617 is a deficient number, since it is larger than the sum of its proper divisors (1451991379).

53723679617 is a wasteful number, since it uses less digits than its factorization.

53723679617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451991378.

The product of its digits is 10001880, while the sum is 56.

The spelling of 53723679617 in words is "fifty-three billion, seven hundred twenty-three million, six hundred seventy-nine thousand, six hundred seventeen".