82913324991 has 16 divisors (see below), whose sum is σ = 126800239104. Its totient is φ = 47207996064.

The previous prime is 82913324981. The next prime is 82913324993. The reversal of 82913324991 is 19942331928.

It is not a de Polignac number, because 82913324991 - 2³⁵ = 48553586623 is a prime.

It is a super-2 number, since 2×82913324991² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82913324993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7120995 + ... + 7132628.

It is an arithmetic number, because the mean of its divisors is an integer number (7925014944).

Almost surely, 2^82913324991 is an apocalyptic number.

82913324991 is a deficient number, since it is larger than the sum of its proper divisors (43886914113).

82913324991 is a wasteful number, since it uses less digits than its factorization.

82913324991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253910.

The product of its digits is 839808, while the sum is 51.

The spelling of 82913324991 in words is "eighty-two billion, nine hundred thirteen million, three hundred twenty-four thousand, nine hundred ninety-one".