82691047015839 has 32 divisors (see below), whose sum is σ = 122936010785280. Its totient is φ = 54933617188800.

The previous prime is 82691047015739. The next prime is 82691047015847. The reversal of 82691047015839 is 93851074019628.

82691047015839 is a `hidden beast` number, since 8 + 2 + 6 + 9 + 1 + 0 + 47 + 0 + 1 + 583 + 9 = 666.

It is not a de Polignac number, because 82691047015839 - 2⁷ = 82691047015711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82691047015039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30884374 + ... + 33454844.

It is an arithmetic number, because the mean of its divisors is an integer number (3841750337040).

It is a 2-persistent number, because it is pandigital, and so is 2⋅82691047015839 = 165382094031678, but 3⋅82691047015839 = 248073141047517 is not.

Almost surely, 2^{82691047015839} is an apocalyptic number.

82691047015839 is a deficient number, since it is larger than the sum of its proper divisors (40244963769441).

82691047015839 is a wasteful number, since it uses less digits than its factorization.

82691047015839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574668 (or 2574662 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 82691047015839 in words is "eighty-two trillion, six hundred ninety-one billion, forty-seven million, fifteen thousand, eight hundred thirty-nine".