83599954857 has 12 divisors (see below), whose sum is σ = 120774834180. Its totient is φ = 55724375328.

The previous prime is 83599954787. The next prime is 83599954877. The reversal of 83599954857 is 75845999538.

83599954857 is a `hidden beast` number, since 8 + 3 + 59 + 9 + 95 + 485 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60054893721 + 23545061136 = 245061^2 + 153444^2 .

It is not a de Polignac number, because 83599954857 - 2¹⁹ = 83599430569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83599954877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684438 + ... + 797279.

It is an arithmetic number, because the mean of its divisors is an integer number (10064569515).

Almost surely, 2^83599954857 is an apocalyptic number.

It is an amenable number.

83599954857 is a deficient number, since it is larger than the sum of its proper divisors (37174879323).

83599954857 is a wasteful number, since it uses less digits than its factorization.

83599954857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487992 (or 1487989 counting only the distinct ones).

The product of its digits is 489888000, while the sum is 72.

The spelling of 83599954857 in words is "eighty-three billion, five hundred ninety-nine million, nine hundred fifty-four thousand, eight hundred fifty-seven".