20045552111 has 16 divisors (see below), whose sum is σ = 21817442304. Its totient is φ = 18307314144.

The previous prime is 20045552101. The next prime is 20045552129. The reversal of 20045552111 is 11125554002.

It is a cyclic number.

It is not a de Polignac number, because 20045552111 - 2²² = 20041357807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045552101) 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, 589376 + ... + 622458.

It is an arithmetic number, because the mean of its divisors is an integer number (1363590144).

Almost surely, 2^20045552111 is an apocalyptic number.

20045552111 is a deficient number, since it is larger than the sum of its proper divisors (1771890193).

20045552111 is a wasteful number, since it uses less digits than its factorization.

20045552111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33590.

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 20045552111 in words is "twenty billion, forty-five million, five hundred fifty-two thousand, one hundred eleven".