666801467334 has 64 divisors (see below), whose sum is σ = 1540658750400. Its totient is φ = 213513318144.

The previous prime is 666801467309. The next prime is 666801467407. The reversal of 666801467334 is 433764108666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772207 + ... + 1389210.

It is an arithmetic number, because the mean of its divisors is an integer number (24072792975).

Almost surely, 2^666801467334 is an apocalyptic number.

666801467334 is an abundant number, since it is smaller than the sum of its proper divisors (873857283066).

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

666801467334 is a wasteful number, since it uses less digits than its factorization.

666801467334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161654 (or 2161648 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 666801467334 in words is "six hundred sixty-six billion, eight hundred one million, four hundred sixty-seven thousand, three hundred thirty-four".