82657665751 has 4 divisors (see below), whose sum is σ = 83119440600. Its totient is φ = 82195890904.

The previous prime is 82657665731. The next prime is 82657665767. The reversal of 82657665751 is 15756675628.

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 82657665751 - 2¹⁷ = 82657534679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82657665731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230887156 + ... + 230887513.

It is an arithmetic number, because the mean of its divisors is an integer number (20779860150).

Almost surely, 2^82657665751 is an apocalyptic number.

82657665751 is a deficient number, since it is larger than the sum of its proper divisors (461774849).

82657665751 is a wasteful number, since it uses less digits than its factorization.

82657665751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461774848.

The product of its digits is 21168000, while the sum is 58.

The spelling of 82657665751 in words is "eighty-two billion, six hundred fifty-seven million, six hundred sixty-five thousand, seven hundred fifty-one".