12909090066 has 16 divisors (see below), whose sum is σ = 25820457600. Its totient is φ = 4302650448.

The previous prime is 12909090059. The next prime is 12909090079. The reversal of 12909090066 is 66009090921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16186 + ... + 161493.

It is an arithmetic number, because the mean of its divisors is an integer number (1613778600).

Almost surely, 2^12909090066 is an apocalyptic number.

12909090066 is an abundant number, since it is smaller than the sum of its proper divisors (12911367534).

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

12909090066 is a wasteful number, since it uses less digits than its factorization.

12909090066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189793.

The product of its (nonzero) digits is 52488, while the sum is 42.

The spelling of 12909090066 in words is "twelve billion, nine hundred nine million, ninety thousand, sixty-six".