82506499913691 has 24 divisors (see below), whose sum is σ = 136207002228960. Its totient is φ = 47144565063936.

The previous prime is 82506499913687. The next prime is 82506499913693. The reversal of 82506499913691 is 19631999460528.

82506499913691 is a `hidden beast` number, since 8 + 2 + 506 + 49 + 9 + 9 + 13 + 69 + 1 = 666.

It is not a de Polignac number, because 82506499913691 - 2² = 82506499913687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82506499913693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26372670 + ... + 29334803.

It is an arithmetic number, because the mean of its divisors is an integer number (5675291759540).

Almost surely, 2^{82506499913691} is an apocalyptic number.

82506499913691 is a deficient number, since it is larger than the sum of its proper divisors (53700502315269).

82506499913691 is a wasteful number, since it uses less digits than its factorization.

82506499913691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55730995 (or 55730992 counting only the distinct ones).

The product of its (nonzero) digits is 226748160, while the sum is 72.

The spelling of 82506499913691 in words is "eighty-two trillion, five hundred six billion, four hundred ninety-nine million, nine hundred thirteen thousand, six hundred ninety-one".