82718415723861 has 24 divisors (see below), whose sum is σ = 120429775851840. Its totient is φ = 54708827953536.

The previous prime is 82718415723829. The next prime is 82718415723941. The reversal of 82718415723861 is 16832751481728.

82718415723861 is a `hidden beast` number, since 8 + 2 + 7 + 18 + 41 + 572 + 3 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 82718415723861 - 2⁵ = 82718415723829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82718415733861) 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, 22474900 + ... + 25895133.

It is an arithmetic number, because the mean of its divisors is an integer number (5017907327160).

Almost surely, 2^{82718415723861} is an apocalyptic number.

It is an amenable number.

82718415723861 is a deficient number, since it is larger than the sum of its proper divisors (37711360127979).

82718415723861 is a wasteful number, since it uses less digits than its factorization.

82718415723861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48371545 (or 48371542 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 82718415723861 in words is "eighty-two trillion, seven hundred eighteen billion, four hundred fifteen million, seven hundred twenty-three thousand, eight hundred sixty-one".