82636842856768 has 14 divisors (see below), whose sum is σ = 163982485044026. Its totient is φ = 41318421428352.

The previous prime is 82636842856739. The next prime is 82636842856781. The reversal of 82636842856768 is 86765824863628.

It can be written as a sum of positive squares in only one way, i.e., 80027480772864 + 2609362083904 = 8945808^2 + 1615352^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645600334755 + ... + 645600334882.

Almost surely, 2^{82636842856768} is an apocalyptic number.

It is an amenable number.

82636842856768 is a deficient number, since it is larger than the sum of its proper divisors (81345642187258).

82636842856768 is a wasteful number, since it uses less digits than its factorization.

82636842856768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291200669649 (or 1291200669639 counting only the distinct ones).

The product of its digits is 8918138880, while the sum is 79.

The spelling of 82636842856768 in words is "eighty-two trillion, six hundred thirty-six billion, eight hundred forty-two million, eight hundred fifty-six thousand, seven hundred sixty-eight".