768531135867 has 64 divisors (see below), whose sum is σ = 1145926973952. Its totient is φ = 454239360000.

The previous prime is 768531135863. The next prime is 768531135871.

It is a happy number.

768531135867 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (768531135863) and next prime (768531135871).

It is not a de Polignac number, because 768531135867 - 2² = 768531135863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 768531135867.

It is not an unprimeable number, because it can be changed into a prime (768531135863) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236251413 + ... + 236254665.

It is an arithmetic number, because the mean of its divisors is an integer number (17905108968).

Almost surely, 2^768531135867 is an apocalyptic number.

768531135867 is a deficient number, since it is larger than the sum of its proper divisors (377395838085).

768531135867 is a wasteful number, since it uses less digits than its factorization.

768531135867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412.

The product of its digits is 25401600, while the sum is 60.

The spelling of 768531135867 in words is "seven hundred sixty-eight billion, five hundred thirty-one million, one hundred thirty-five thousand, eight hundred sixty-seven".