84057523866 has 12 divisors (see below), whose sum is σ = 182124635082. Its totient is φ = 28019174616.

The previous prime is 84057523861. The next prime is 84057523883. The reversal of 84057523866 is 66832575048.

84057523866 is a `hidden beast` number, since 8 + 4 + 0 + 57 + 523 + 8 + 66 = 666.

It can be written as a sum of positive squares in only one way, i.e., 83971868841 + 85655025 = 289779^2 + 9255^2 .

It is not an unprimeable number, because it can be changed into a prime (84057523861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2334931201 + ... + 2334931236.

Almost surely, 2^84057523866 is an apocalyptic number.

84057523866 is an abundant number, since it is smaller than the sum of its proper divisors (98067111216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84057523866 is a wasteful number, since it uses less digits than its factorization.

84057523866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669862445 (or 4669862442 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 84057523866 in words is "eighty-four billion, fifty-seven million, five hundred twenty-three thousand, eight hundred sixty-six".