82405954765 has 4 divisors (see below), whose sum is σ = 98887145724. Its totient is φ = 65924763808.

The previous prime is 82405954733. The next prime is 82405954811. The reversal of 82405954765 is 56745950428.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39944819044 + 42461135721 = 199862^2 + 206061^2 .

It is a cyclic number.

It is not a de Polignac number, because 82405954765 - 2⁵ = 82405954733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8240595472 + ... + 8240595481.

It is an arithmetic number, because the mean of its divisors is an integer number (24721786431).

Almost surely, 2^82405954765 is an apocalyptic number.

It is an amenable number.

82405954765 is a deficient number, since it is larger than the sum of its proper divisors (16481190959).

82405954765 is a wasteful number, since it uses less digits than its factorization.

82405954765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16481190958.

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 82405954765 in words is "eighty-two billion, four hundred five million, nine hundred fifty-four thousand, seven hundred sixty-five".