666758306115 has 96 divisors (see below), whose sum is σ = 1269127491840. Its totient is φ = 321139411200.

The previous prime is 666758306033. The next prime is 666758306119. The reversal of 666758306115 is 511603857666.

It is not a de Polignac number, because 666758306115 - 2²⁵ = 666724751683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666758306119) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 135215200 + ... + 135220130.

It is an arithmetic number, because the mean of its divisors is an integer number (13220078040).

Almost surely, 2^666758306115 is an apocalyptic number.

666758306115 is a deficient number, since it is larger than the sum of its proper divisors (602369185725).

666758306115 is a wasteful number, since it uses less digits than its factorization.

666758306115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6705 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 666758306115 in words is "six hundred sixty-six billion, seven hundred fifty-eight million, three hundred six thousand, one hundred fifteen".