666671840592 has 120 divisors (see below), whose sum is σ = 1738445982336. Its totient is φ = 220150554624.

The previous prime is 666671840573. The next prime is 666671840603. The reversal of 666671840592 is 295048176666.

It is a congruent number.

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, 547798768 + ... + 547799984.

Almost surely, 2^666671840592 is an apocalyptic number.

It is an amenable number.

666671840592 is an abundant number, since it is smaller than the sum of its proper divisors (1071774141744).

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

666671840592 is a wasteful number, since it uses less digits than its factorization.

666671840592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 666671840592 in words is "six hundred sixty-six billion, six hundred seventy-one million, eight hundred forty thousand, five hundred ninety-two".