853851237768 has 24 divisors (see below), whose sum is σ = 2312513769150. Its totient is φ = 284617079232.

The previous prime is 853851237761. The next prime is 853851237791. The reversal of 853851237768 is 867732158358.

853851237768 is a `hidden beast` number, since 8 + 5 + 385 + 123 + 77 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 737637064164 + 116214173604 = 858858^2 + 340902^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (853851237761) 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, 5929522413 + ... + 5929522556.

Almost surely, 2^853851237768 is an apocalyptic number.

It is an amenable number.

853851237768 is an abundant number, since it is smaller than the sum of its proper divisors (1458662531382).

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

853851237768 is a wasteful number, since it uses less digits than its factorization.

853851237768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859044981 (or 11859044974 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 63.

The spelling of 853851237768 in words is "eight hundred fifty-three billion, eight hundred fifty-one million, two hundred thirty-seven thousand, seven hundred sixty-eight".