20541011800 has 24 divisors (see below), whose sum is σ = 47757852900. Its totient is φ = 8216404640.

The previous prime is 20541011791. The next prime is 20541011851. The reversal of 20541011800 is 811014502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51352330 + ... + 51352729.

Almost surely, 2^20541011800 is an apocalyptic number.

20541011800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541011800 is an abundant number, since it is smaller than the sum of its proper divisors (27216841100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20541011800 is a wasteful number, since it uses less digits than its factorization.

20541011800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102705075 (or 102705066 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The spelling of 20541011800 in words is "twenty billion, five hundred forty-one million, eleven thousand, eight hundred".