666931124090 has 128 divisors (see below), whose sum is σ = 1583726100480. Its totient is φ = 195901977600.

The previous prime is 666931124029. The next prime is 666931124113. The reversal of 666931124090 is 90421139666.

It is a happy number.

666931124090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2674994 + ... + 2913666.

It is an arithmetic number, because the mean of its divisors is an integer number (12372860160).

Almost surely, 2^666931124090 is an apocalyptic number.

666931124090 is an abundant number, since it is smaller than the sum of its proper divisors (916794976390).

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

666931124090 is a wasteful number, since it uses less digits than its factorization.

666931124090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238908.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 666931124090 in words is "six hundred sixty-six billion, nine hundred thirty-one million, one hundred twenty-four thousand, ninety".