20466666666 has 24 divisors (see below), whose sum is σ = 45181134180. Its totient is φ = 6693500736.

The previous prime is 20466666659. The next prime is 20466666709. The reversal of 20466666666 is 66666666402.

It can be written as a sum of positive squares in 2 ways, for example, as 20430414225 + 36252441 = 142935^2 + 6021^2 .

20466666666 is a modest number, since divided by 666666 gives 20466 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10725811 + ... + 10727718.

Almost surely, 2^20466666666 is an apocalyptic number.

20466666666 is an abundant number, since it is smaller than the sum of its proper divisors (24714467514).

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

20466666666 is a wasteful number, since it uses less digits than its factorization.

20466666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21453590 (or 21453587 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 54.

The spelling of 20466666666 in words is "twenty billion, four hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".