665130768524 has 12 divisors (see below), whose sum is σ = 1163987748000. Its totient is φ = 332562840528.

The previous prime is 665130768521. The next prime is 665130768569. The reversal of 665130768524 is 425867031566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (665130768521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29837 + ... + 1153755.

It is an arithmetic number, because the mean of its divisors is an integer number (96998979000).

Almost surely, 2^665130768524 is an apocalyptic number.

It is an amenable number.

665130768524 is a deficient number, since it is larger than the sum of its proper divisors (498856979476).

665130768524 is a wasteful number, since it uses less digits than its factorization.

665130768524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271872 (or 1271870 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 665130768524 in words is "six hundred sixty-five billion, one hundred thirty million, seven hundred sixty-eight thousand, five hundred twenty-four".