82999770399 has 48 divisors (see below), whose sum is σ = 147728572992. Its totient is φ = 43728643584.

The previous prime is 82999770389. The next prime is 82999770409. The reversal of 82999770399 is 99307799928.

82999770399 is a `hidden beast` number, since 82 + 9 + 9 + 97 + 70 + 399 = 666.

It is an interprime number because it is at equal distance from previous prime (82999770389) and next prime (82999770409).

It is not a de Polignac number, because 82999770399 - 2²⁵ = 82966215967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82999770389) 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 47 ways as a sum of consecutive naturals, for example, 642757 + ... + 761009.

It is an arithmetic number, because the mean of its divisors is an integer number (3077678604).

Almost surely, 2^82999770399 is an apocalyptic number.

82999770399 is a deficient number, since it is larger than the sum of its proper divisors (64728802593).

82999770399 is a wasteful number, since it uses less digits than its factorization.

82999770399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119136 (or 119133 counting only the distinct ones).

The product of its (nonzero) digits is 138883248, while the sum is 72.

The spelling of 82999770399 in words is "eighty-two billion, nine hundred ninety-nine million, seven hundred seventy thousand, three hundred ninety-nine".