2198837321664 has 56 divisors (see below), whose sum is σ = 5818015773648. Its totient is φ = 732913182720.

The previous prime is 2198837321563. The next prime is 2198837321743. The reversal of 2198837321664 is 4661237388912.

It is a junction number, because it is equal to n+sod(n) for n = 2198837321598 and 2198837321607.

It is a congruent number.

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, 4284724 + ... + 4770380.

Almost surely, 2^{2198837321664} is an apocalyptic number.

2198837321664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2198837321664 is an abundant number, since it is smaller than the sum of its proper divisors (3619178451984).

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

2198837321664 is a wasteful number, since it uses less digits than its factorization.

2198837321664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509253 (or 509243 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 60.

The spelling of 2198837321664 in words is "two trillion, one hundred ninety-eight billion, eight hundred thirty-seven million, three hundred twenty-one thousand, six hundred sixty-four".