2884890686868 has 72 divisors (see below), whose sum is σ = 7490244125000. Its totient is φ = 935541446400.

The previous prime is 2884890686863. The next prime is 2884890686897. The reversal of 2884890686868 is 8686860984882.

It can be written as a sum of positive squares in 4 ways, for example, as 1985765725584 + 899124961284 = 1409172^2 + 948222^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2884890686861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13078758 + ... + 13297506.

Almost surely, 2^{2884890686868} is an apocalyptic number.

It is an amenable number.

2884890686868 is an abundant number, since it is smaller than the sum of its proper divisors (4605353438132).

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

2884890686868 is a wasteful number, since it uses less digits than its factorization.

2884890686868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228697 (or 228692 counting only the distinct ones).

The product of its (nonzero) digits is 4076863488, while the sum is 81.

The spelling of 2884890686868 in words is "two trillion, eight hundred eighty-four billion, eight hundred ninety million, six hundred eighty-six thousand, eight hundred sixty-eight".