82407791907 has 40 divisors (see below), whose sum is σ = 148964989536. Its totient is φ = 44320151808.

The previous prime is 82407791899. The next prime is 82407791909. The reversal of 82407791907 is 70919770428.

82407791907 is a `hidden beast` number, since 82 + 407 + 79 + 1 + 90 + 7 = 666.

It is not a de Polignac number, because 82407791907 - 2³ = 82407791899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82407791909) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4265068 + ... + 4284345.

Almost surely, 2^82407791907 is an apocalyptic number.

82407791907 is a deficient number, since it is larger than the sum of its proper divisors (66557197629).

82407791907 is a wasteful number, since it uses less digits than its factorization.

82407791907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8549449 (or 8549440 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 82407791907 in words is "eighty-two billion, four hundred seven million, seven hundred ninety-one thousand, nine hundred seven".