666098564320 has 192 divisors, whose sum is σ = 1858219646976. Its totient is φ = 220910376960.

The previous prime is 666098564273. The next prime is 666098564371. The reversal of 666098564320 is 23465890666.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4135537 + ... + 4293583.

It is an arithmetic number, because the mean of its divisors is an integer number (9678227328).

Almost surely, 2^666098564320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666098564320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929109823488).

666098564320 is an abundant number, since it is smaller than the sum of its proper divisors (1192121082656).

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

666098564320 is a wasteful number, since it uses less digits than its factorization.

666098564320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158193 (or 158185 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 666098564320 in words is "six hundred sixty-six billion, ninety-eight million, five hundred sixty-four thousand, three hundred twenty".