83117708856437 has 4 divisors (see below), whose sum is σ = 83118160907040. Its totient is φ = 83117256805836.

The previous prime is 83117708856409. The next prime is 83117708856583. The reversal of 83117708856437 is 73465880771138.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83117708856437 - 2⁸ = 83117708856181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83117708816437) 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, 225749387 + ... + 226117272.

It is an arithmetic number, because the mean of its divisors is an integer number (20779540226760).

Almost surely, 2^{83117708856437} is an apocalyptic number.

It is an amenable number.

83117708856437 is a deficient number, since it is larger than the sum of its proper divisors (452050603).

83117708856437 is a wasteful number, since it uses less digits than its factorization.

83117708856437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452050602.

The product of its (nonzero) digits is 189665280, while the sum is 68.

The spelling of 83117708856437 in words is "eighty-three trillion, one hundred seventeen billion, seven hundred eight million, eight hundred fifty-six thousand, four hundred thirty-seven".