6578444077568 has 80 divisors (see below), whose sum is σ = 14424816377664. Its totient is φ = 2972296028160.

The previous prime is 6578444077559. The next prime is 6578444077571. The reversal of 6578444077568 is 8657704448756.

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, 2556605 + ... + 4437692.

Almost surely, 2^{6578444077568} is an apocalyptic number.

It is an amenable number.

6578444077568 is an abundant number, since it is smaller than the sum of its proper divisors (7846372300096).

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

6578444077568 is a wasteful number, since it uses less digits than its factorization.

6578444077568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994493 (or 6994477 counting only the distinct ones).

The product of its (nonzero) digits is 1264435200, while the sum is 71.

The spelling of 6578444077568 in words is "six trillion, five hundred seventy-eight billion, four hundred forty-four million, seventy-seven thousand, five hundred sixty-eight".