660661273296 has 60 divisors (see below), whose sum is σ = 1917413027712. Its totient is φ = 220220423136.

The previous prime is 660661273277. The next prime is 660661273387. The reversal of 660661273296 is 692372166066.

660661273296 is a `hidden beast` number, since 6 + 606 + 6 + 1 + 2 + 7 + 3 + 29 + 6 = 666.

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 11 ways as a sum of consecutive naturals, for example, 84957696 + ... + 84965471.

Almost surely, 2^660661273296 is an apocalyptic number.

It is an amenable number.

660661273296 is an abundant number, since it is smaller than the sum of its proper divisors (1256751754416).

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

660661273296 is a wasteful number, since it uses less digits than its factorization.

660661273296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169923190 (or 169923172 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 660661273296 in words is "six hundred sixty billion, six hundred sixty-one million, two hundred seventy-three thousand, two hundred ninety-six".