618867768816 has 60 divisors (see below), whose sum is σ = 1889422056600. Its totient is φ = 187535687040.

The previous prime is 618867768809. The next prime is 618867768829.

618867768816 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195348091 + ... + 195351258.

It is an arithmetic number, because the mean of its divisors is an integer number (31490367610).

Almost surely, 2^618867768816 is an apocalyptic number.

618867768816 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

618867768816 is an abundant number, since it is smaller than the sum of its proper divisors (1270554287784).

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

618867768816 is a wasteful number, since it uses less digits than its factorization.

618867768816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390699374 (or 390699365 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 72.

The spelling of 618867768816 in words is "six hundred eighteen billion, eight hundred sixty-seven million, seven hundred sixty-eight thousand, eight hundred sixteen".