20054032989 has 16 divisors (see below), whose sum is σ = 26831185920. Its totient is φ = 13323182400.

The previous prime is 20054032969. The next prime is 20054032997. The reversal of 20054032989 is 98923045002.

It is not a de Polignac number, because 20054032989 - 2⁷ = 20054032861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20054032989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20054032969) 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, 1363527 + ... + 1378155.

It is an arithmetic number, because the mean of its divisors is an integer number (1676949120).

Almost surely, 2^20054032989 is an apocalyptic number.

It is an amenable number.

20054032989 is a deficient number, since it is larger than the sum of its proper divisors (6777152931).

20054032989 is a wasteful number, since it uses less digits than its factorization.

20054032989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16180.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 20054032989 in words is "twenty billion, fifty-four million, thirty-two thousand, nine hundred eighty-nine".