2228638927864 has 16 divisors (see below), whose sum is σ = 4217034670200. Its totient is φ = 1104096349152.

The previous prime is 2228638927841. The next prime is 2228638927919. The reversal of 2228638927864 is 4687298368222.

It is a self number, because there is not a number n which added to its sum of digits gives 2228638927864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277888422 + ... + 1277890165.

Almost surely, 2^{2228638927864} is an apocalyptic number.

It is an amenable number.

2228638927864 is a deficient number, since it is larger than the sum of its proper divisors (1988395742336).

2228638927864 is a wasteful number, since it uses less digits than its factorization.

2228638927864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555778702 (or 2555778698 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 67.

The spelling of 2228638927864 in words is "two trillion, two hundred twenty-eight billion, six hundred thirty-eight million, nine hundred twenty-seven thousand, eight hundred sixty-four".