20666104312 has 16 divisors (see below), whose sum is σ = 44284509360. Its totient is φ = 8856901824.

The previous prime is 20666104297. The next prime is 20666104367. The reversal of 20666104312 is 21340166602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184518733 + ... + 184518844.

It is an arithmetic number, because the mean of its divisors is an integer number (2767781835).

Almost surely, 2^20666104312 is an apocalyptic number.

It is an amenable number.

20666104312 is an abundant number, since it is smaller than the sum of its proper divisors (23618405048).

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

20666104312 is a wasteful number, since it uses less digits than its factorization.

20666104312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369037590 (or 369037586 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 20666104312 in words is "twenty billion, six hundred sixty-six million, one hundred four thousand, three hundred twelve".