20403564484 has 12 divisors (see below), whose sum is σ = 35712835984. Its totient is φ = 10199897064.

The previous prime is 20403564473. The next prime is 20403564487. The reversal of 20403564484 is 48446530402.

It is not an unprimeable number, because it can be changed into a prime (20403564487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446802 + ... + 490345.

Almost surely, 2^20403564484 is an apocalyptic number.

It is an amenable number.

20403564484 is a deficient number, since it is larger than the sum of its proper divisors (15309271500).

20403564484 is a wasteful number, since it uses less digits than its factorization.

20403564484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942594 (or 942592 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

The spelling of 20403564484 in words is "twenty billion, four hundred three million, five hundred sixty-four thousand, four hundred eighty-four".