20660092989 has 16 divisors (see below), whose sum is σ = 28335728064. Its totient is φ = 13384368000.

The previous prime is 20660092951. The next prime is 20660093119. The reversal of 20660092989 is 98929006602.

It is not a de Polignac number, because 20660092989 - 2²⁵ = 20626538557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660092939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664912 + ... + 695289.

It is an arithmetic number, because the mean of its divisors is an integer number (1770983004).

Almost surely, 2^20660092989 is an apocalyptic number.

It is an amenable number.

20660092989 is a deficient number, since it is larger than the sum of its proper divisors (7675635075).

20660092989 is a wasteful number, since it uses less digits than its factorization.

20660092989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360348.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 20660092989 in words is "twenty billion, six hundred sixty million, ninety-two thousand, nine hundred eighty-nine".