618864078216 has 32 divisors (see below), whose sum is σ = 1588975338240. Its totient is φ = 200712673728.

The previous prime is 618864078199. The next prime is 618864078247. The reversal of 618864078216 is 612870468816.

It is a super-2 number, since 2×618864078216² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348458616 + ... + 348460391.

It is an arithmetic number, because the mean of its divisors is an integer number (49655479320).

Almost surely, 2^618864078216 is an apocalyptic number.

It is an amenable number.

618864078216 is an abundant number, since it is smaller than the sum of its proper divisors (970111260024).

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

618864078216 is a wasteful number, since it uses less digits than its factorization.

618864078216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696919053 (or 696919049 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 618864078216 in words is "six hundred eighteen billion, eight hundred sixty-four million, seventy-eight thousand, two hundred sixteen".