83117751371537 has 4 divisors (see below), whose sum is σ = 83132444280036. Its totient is φ = 83103058463040.

The previous prime is 83117751371471. The next prime is 83117751371563. The reversal of 83117751371537 is 73517315771138.

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 16631193234496 + 66486558137041 = 4078136^2 + 8153929^2 .

It is a cyclic number.

It is not a de Polignac number, because 83117751371537 - 2²⁰ = 83117750322961 is a prime.

It is a super-2 number, since 2×83117751371537² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83117751371587) 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, 7346445764 + ... + 7346457077.

It is an arithmetic number, because the mean of its divisors is an integer number (20783111070009).

Almost surely, 2^{83117751371537} is an apocalyptic number.

It is an amenable number.

83117751371537 is a deficient number, since it is larger than the sum of its proper divisors (14692908499).

83117751371537 is a wasteful number, since it uses less digits than its factorization.

83117751371537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14692908498.

The product of its digits is 12965400, while the sum is 59.

The spelling of 83117751371537 in words is "eighty-three trillion, one hundred seventeen billion, seven hundred fifty-one million, three hundred seventy-one thousand, five hundred thirty-seven".