660319197560 has 32 divisors (see below), whose sum is σ = 1620783486000. Its totient is φ = 240116071680.

The previous prime is 660319197523. The next prime is 660319197599. The reversal of 660319197560 is 65791913066.

It is a super-4 number, since 4×660319197560⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750362285 + ... + 750363164.

Almost surely, 2^660319197560 is an apocalyptic number.

It is an amenable number.

660319197560 is an abundant number, since it is smaller than the sum of its proper divisors (960464288440).

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

660319197560 is a wasteful number, since it uses less digits than its factorization.

660319197560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500725471 (or 1500725467 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 660319197560 in words is "six hundred sixty billion, three hundred nineteen million, one hundred ninety-seven thousand, five hundred sixty".