660279899876 has 48 divisors (see below), whose sum is σ = 1193333299200. Its totient is φ = 319504886400.

The previous prime is 660279899857. The next prime is 660279899891. The reversal of 660279899876 is 678998972066.

It is a junction number, because it is equal to n+sod(n) for n = 660279899797 and 660279899806.

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, 6193826 + ... + 6299526.

It is an arithmetic number, because the mean of its divisors is an integer number (24861110400).

Almost surely, 2^660279899876 is an apocalyptic number.

It is an amenable number.

660279899876 is a deficient number, since it is larger than the sum of its proper divisors (533053399324).

660279899876 is a wasteful number, since it uses less digits than its factorization.

660279899876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106124 (or 106122 counting only the distinct ones).

The product of its (nonzero) digits is 987614208, while the sum is 77.

The spelling of 660279899876 in words is "six hundred sixty billion, two hundred seventy-nine million, eight hundred ninety-nine thousand, eight hundred seventy-six".