660635038104 has 72 divisors (see below), whose sum is σ = 1660706249940. Its totient is φ = 219002520000.

The previous prime is 660635038087. The next prime is 660635038159. The reversal of 660635038104 is 401830536066.

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 17 ways as a sum of consecutive naturals, for example, 999447534 + ... + 999448194.

Almost surely, 2^660635038104 is an apocalyptic number.

It is an amenable number.

660635038104 is an abundant number, since it is smaller than the sum of its proper divisors (1000071211836).

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

660635038104 is an frugal number, since it uses more digits than its factorization.

660635038104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 660635038104 in words is "six hundred sixty billion, six hundred thirty-five million, thirty-eight thousand, one hundred four".