1878856777968 has 40 divisors (see below), whose sum is σ = 4884628734288. Its totient is φ = 622296509952.

The previous prime is 1878856777951. The next prime is 1878856778027. The reversal of 1878856777968 is 8697776588781.

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, 124651221 + ... + 124666292.

Almost surely, 2^{1878856777968} is an apocalyptic number.

It is an amenable number.

1878856777968 is an abundant number, since it is smaller than the sum of its proper divisors (3005771956320).

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

1878856777968 is a wasteful number, since it uses less digits than its factorization.

1878856777968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249317681 (or 249317675 counting only the distinct ones).

The product of its digits is 15931883520, while the sum is 87.

The spelling of 1878856777968 in words is "one trillion, eight hundred seventy-eight billion, eight hundred fifty-six million, seven hundred seventy-seven thousand, nine hundred sixty-eight".