82644674051 has 4 divisors (see below), whose sum is σ = 82662774672. Its totient is φ = 82626573432.

The previous prime is 82644674041. The next prime is 82644674107. The reversal of 82644674051 is 15047644628.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82644674051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82644673987 and 82644674005.

It is not an unprimeable number, because it can be changed into a prime (82644674041) 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, 9043460 + ... + 9052593.

It is an arithmetic number, because the mean of its divisors is an integer number (20665693668).

Almost surely, 2^82644674051 is an apocalyptic number.

82644674051 is a deficient number, since it is larger than the sum of its proper divisors (18100621).

82644674051 is a wasteful number, since it uses less digits than its factorization.

82644674051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100620.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 82644674051 in words is "eighty-two billion, six hundred forty-four million, six hundred seventy-four thousand, fifty-one".