660436992132 has 48 divisors (see below), whose sum is σ = 1604349301632. Its totient is φ = 211261582080.

The previous prime is 660436992121. The next prime is 660436992191. The reversal of 660436992132 is 231299634066.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10155744 + ... + 10220567.

It is an arithmetic number, because the mean of its divisors is an integer number (33423943784).

Almost surely, 2^660436992132 is an apocalyptic number.

It is an amenable number.

660436992132 is an abundant number, since it is smaller than the sum of its proper divisors (943912309500).

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

660436992132 is a wasteful number, since it uses less digits than its factorization.

660436992132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20376428 (or 20376426 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 660436992132 in words is "six hundred sixty billion, four hundred thirty-six million, nine hundred ninety-two thousand, one hundred thirty-two".