2553448774868 has 6 divisors (see below), whose sum is σ = 4468535356026. Its totient is φ = 1276724387432.

The previous prime is 2553448774817. The next prime is 2553448774871. The reversal of 2553448774868 is 8684778443552.

It can be written as a sum of positive squares in only one way, i.e., 2536763369284 + 16685405584 = 1592722^2 + 129172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319181096855 + ... + 319181096862.

It is an arithmetic number, because the mean of its divisors is an integer number (744755892671).

Almost surely, 2^{2553448774868} is an apocalyptic number.

It is an amenable number.

2553448774868 is a deficient number, since it is larger than the sum of its proper divisors (1915086581158).

2553448774868 is a wasteful number, since it uses less digits than its factorization.

2553448774868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638362193721 (or 638362193719 counting only the distinct ones).

The product of its digits is 1445068800, while the sum is 71.

The spelling of 2553448774868 in words is "two trillion, five hundred fifty-three billion, four hundred forty-eight million, seven hundred seventy-four thousand, eight hundred sixty-eight".