20005542445 has 32 divisors (see below), whose sum is σ = 28015414272. Its totient is φ = 13429608192.

The previous prime is 20005542437. The next prime is 20005542457. The reversal of 20005542445 is 54424550002.

It is not a de Polignac number, because 20005542445 - 2³ = 20005542437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847219 + ... + 870511.

It is an arithmetic number, because the mean of its divisors is an integer number (875481696).

Almost surely, 2^20005542445 is an apocalyptic number.

It is an amenable number.

20005542445 is a deficient number, since it is larger than the sum of its proper divisors (8009871827).

20005542445 is a wasteful number, since it uses less digits than its factorization.

20005542445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23821.

The product of its (nonzero) digits is 32000, while the sum is 31.

The spelling of 20005542445 in words is "twenty billion, five million, five hundred forty-two thousand, four hundred forty-five".