82917918815 has 8 divisors (see below), whose sum is σ = 103827655008. Its totient is φ = 63450233440.

The previous prime is 82917918803. The next prime is 82917918817. The reversal of 82917918815 is 51881971928.

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

It is not a de Polignac number, because 82917918815 - 2¹² = 82917914719 is a prime.

It is a super-2 number, since 2×82917918815² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82917918817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360512576 + ... + 360512805.

It is an arithmetic number, because the mean of its divisors is an integer number (12978456876).

Almost surely, 2^82917918815 is an apocalyptic number.

82917918815 is a deficient number, since it is larger than the sum of its proper divisors (20909736193).

82917918815 is a wasteful number, since it uses less digits than its factorization.

82917918815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721025409.

The product of its digits is 2903040, while the sum is 59.

The spelling of 82917918815 in words is "eighty-two billion, nine hundred seventeen million, nine hundred eighteen thousand, eight hundred fifteen".