20541945411 has 16 divisors (see below), whose sum is σ = 32773474720. Its totient is φ = 12641196960.

The previous prime is 20541945407. The next prime is 20541945421. The reversal of 20541945411 is 11454914502.

20541945411 is a `hidden beast` number, since 2 + 0 + 54 + 194 + 5 + 411 = 666.

It is not a de Polignac number, because 20541945411 - 2² = 20541945407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20541945421) 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, 29261680 + ... + 29262381.

It is an arithmetic number, because the mean of its divisors is an integer number (2048342170).

Almost surely, 2^20541945411 is an apocalyptic number.

20541945411 is a deficient number, since it is larger than the sum of its proper divisors (12231529309).

20541945411 is a wasteful number, since it uses less digits than its factorization.

20541945411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58524083 (or 58524077 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 20541945411 in words is "twenty billion, five hundred forty-one million, nine hundred forty-five thousand, four hundred eleven".