660130380765 has 24 divisors (see below), whose sum is σ = 1144249255968. Its totient is φ = 352062378720.

The previous prime is 660130380757. The next prime is 660130380827. The reversal of 660130380765 is 567083031066.

660130380765 is a `hidden beast` number, since 6 + 601 + 3 + 0 + 38 + 0 + 7 + 6 + 5 = 666.

It is not a de Polignac number, because 660130380765 - 2³ = 660130380757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 660130380765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2677842 + ... + 2913948.

It is an arithmetic number, because the mean of its divisors is an integer number (47677052332).

Almost surely, 2^660130380765 is an apocalyptic number.

It is an amenable number.

660130380765 is a deficient number, since it is larger than the sum of its proper divisors (484118875203).

660130380765 is a wasteful number, since it uses less digits than its factorization.

660130380765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298249 (or 298246 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 660130380765 in words is "six hundred sixty billion, one hundred thirty million, three hundred eighty thousand, seven hundred sixty-five".