867764838018 has 64 divisors (see below), whose sum is σ = 1874234420352. Its totient is φ = 266262405120.

The previous prime is 867764837993. The next prime is 867764838029. The reversal of 867764838018 is 810838467768.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 867764838018.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42638121 + ... + 42658467.

It is an arithmetic number, because the mean of its divisors is an integer number (29284912818).

Almost surely, 2^867764838018 is an apocalyptic number.

867764838018 is an abundant number, since it is smaller than the sum of its proper divisors (1006469582334).

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

867764838018 is a wasteful number, since it uses less digits than its factorization.

867764838018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21859.

The product of its (nonzero) digits is 86704128, while the sum is 66.

The spelling of 867764838018 in words is "eight hundred sixty-seven billion, seven hundred sixty-four million, eight hundred thirty-eight thousand, eighteen".