82694779513 has 2 divisors, whose sum is σ = 82694779514. Its totient is φ = 82694779512.

The previous prime is 82694779483. The next prime is 82694779543. The reversal of 82694779513 is 31597749628.

It is a balanced prime because it is at equal distance from previous prime (82694779483) and next prime (82694779543).

It can be written as a sum of positive squares in only one way, i.e., 82255960809 + 438818704 = 286803^2 + 20948^2 .

It is a cyclic number.

It is not a de Polignac number, because 82694779513 - 2³³ = 74104844921 is a prime.

It is not a weakly prime, because it can be changed into another prime (82694779543) 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 as a sum of consecutive naturals, namely, 41347389756 + 41347389757.

It is an arithmetic number, because the mean of its divisors is an integer number (41347389757).

Almost surely, 2^82694779513 is an apocalyptic number.

It is an amenable number.

82694779513 is a deficient number, since it is larger than the sum of its proper divisors (1).

82694779513 is an equidigital number, since it uses as much as digits as its factorization.

82694779513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The spelling of 82694779513 in words is "eighty-two billion, six hundred ninety-four million, seven hundred seventy-nine thousand, five hundred thirteen".