82699955775 has 48 divisors (see below), whose sum is σ = 151950353920. Its totient is φ = 44098668000.

The previous prime is 82699955771. The next prime is 82699955797. The reversal of 82699955775 is 57755999628.

82699955775 is a `hidden beast` number, since 8 + 2 + 69 + 9 + 9 + 557 + 7 + 5 = 666.

It is a Cunningham number, because it is equal to 287576²-1.

It is not a de Polignac number, because 82699955775 - 2² = 82699955771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82699955771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7183674 + ... + 7195176.

Almost surely, 2^82699955775 is an apocalyptic number.

82699955775 is a deficient number, since it is larger than the sum of its proper divisors (69250398145).

82699955775 is a wasteful number, since it uses less digits than its factorization.

82699955775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22173 (or 22162 counting only the distinct ones).

The product of its digits is 428652000, while the sum is 72.

The spelling of 82699955775 in words is "eighty-two billion, six hundred ninety-nine million, nine hundred fifty-five thousand, seven hundred seventy-five".