20288574905 has 8 divisors (see below), whose sum is σ = 24361679232. Its totient is φ = 16220600368.

The previous prime is 20288574893. The next prime is 20288574923. The reversal of 20288574905 is 50947588202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20288574905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273739 + ... + 1289568.

It is an arithmetic number, because the mean of its divisors is an integer number (3045209904).

Almost surely, 2^20288574905 is an apocalyptic number.

It is an amenable number.

20288574905 is a deficient number, since it is larger than the sum of its proper divisors (4073104327).

20288574905 is a wasteful number, since it uses less digits than its factorization.

20288574905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564895.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 20288574905 in words is "twenty billion, two hundred eighty-eight million, five hundred seventy-four thousand, nine hundred five".