82097827631 has 4 divisors (see below), whose sum is σ = 82237688232. Its totient is φ = 81957967032.

The previous prime is 82097827613. The next prime is 82097827633. The reversal of 82097827631 is 13672879028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82097827631 - 2²⁶ = 82030718767 is a prime.

It is a super-2 number, since 2×82097827631² (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 (82097827633) 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, 69929420 + ... + 69930593.

It is an arithmetic number, because the mean of its divisors is an integer number (20559422058).

Almost surely, 2^82097827631 is an apocalyptic number.

82097827631 is a deficient number, since it is larger than the sum of its proper divisors (139860601).

82097827631 is a wasteful number, since it uses less digits than its factorization.

82097827631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139860600.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 82097827631 in words is "eighty-two billion, ninety-seven million, eight hundred twenty-seven thousand, six hundred thirty-one".