20044512045 has 16 divisors (see below), whose sum is σ = 35634688320. Its totient is φ = 10690406352.

The previous prime is 20044511987. The next prime is 20044512067. The reversal of 20044512045 is 54021544002.

20044512045 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 451 + 204 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20044512045 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74238799 + ... + 74239068.

It is an arithmetic number, because the mean of its divisors is an integer number (2227168020).

Almost surely, 2^20044512045 is an apocalyptic number.

It is an amenable number.

20044512045 is a deficient number, since it is larger than the sum of its proper divisors (15590176275).

20044512045 is a wasteful number, since it uses less digits than its factorization.

20044512045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148477881 (or 148477875 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 20044512045 in words is "twenty billion, forty-four million, five hundred twelve thousand, forty-five".