82639727200613 has 4 divisors (see below), whose sum is σ = 90152429673408. Its totient is φ = 75127024727820.

The previous prime is 82639727200577. The next prime is 82639727200619. The reversal of 82639727200613 is 31600272793628.

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 82639727200613 - 2³² = 82635432233317 is a prime.

It is a super-2 number, since 2×82639727200613² (a number of 29 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 (82639727200619) 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, 3756351236381 + ... + 3756351236402.

It is an arithmetic number, because the mean of its divisors is an integer number (22538107418352).

Almost surely, 2^{82639727200613} is an apocalyptic number.

It is an amenable number.

82639727200613 is a deficient number, since it is larger than the sum of its proper divisors (7512702472795).

82639727200613 is a wasteful number, since it uses less digits than its factorization.

82639727200613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512702472794.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 82639727200613 in words is "eighty-two trillion, six hundred thirty-nine billion, seven hundred twenty-seven million, two hundred thousand, six hundred thirteen".