6607866394578 has 48 divisors (see below), whose sum is σ = 13945410925056. Its totient is φ = 2086543717440.

The previous prime is 6607866394537. The next prime is 6607866394667. The reversal of 6607866394578 is 8754936687066.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12086578 + ... + 12621453.

It is an arithmetic number, because the mean of its divisors is an integer number (290529394272).

Almost surely, 2^{6607866394578} is an apocalyptic number.

6607866394578 is an abundant number, since it is smaller than the sum of its proper divisors (7337544530478).

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

6607866394578 is a wasteful number, since it uses less digits than its factorization.

6607866394578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24708147 (or 24708118 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 75.

The spelling of 6607866394578 in words is "six trillion, six hundred seven billion, eight hundred sixty-six million, three hundred ninety-four thousand, five hundred seventy-eight".