82712755813 has 8 divisors (see below), whose sum is σ = 82831707000. Its totient is φ = 82593850560.

The previous prime is 82712755793. The next prime is 82712755817. The reversal of 82712755813 is 31855721728.

It can be written as a sum of positive squares in 4 ways, for example, as 12127956129 + 70584799684 = 110127^2 + 265678^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82712755813 - 2³³ = 74122821221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82712755817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5244063 + ... + 5259811.

It is an arithmetic number, because the mean of its divisors is an integer number (10353963375).

Almost surely, 2^82712755813 is an apocalyptic number.

It is an amenable number.

82712755813 is a deficient number, since it is larger than the sum of its proper divisors (118951187).

82712755813 is a wasteful number, since it uses less digits than its factorization.

82712755813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22967.

The product of its digits is 940800, while the sum is 49.

The spelling of 82712755813 in words is "eighty-two billion, seven hundred twelve million, seven hundred fifty-five thousand, eight hundred thirteen".