20266036800 has 84 divisors (see below), whose sum is σ = 66489504816. Its totient is φ = 5404275200.

The previous prime is 20266036793. The next prime is 20266036837. The reversal of 20266036800 is 863066202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2106246 + ... + 2115845.

It is an arithmetic number, because the mean of its divisors is an integer number (791541724).

Almost surely, 2^20266036800 is an apocalyptic number.

20266036800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20266036800 is an abundant number, since it is smaller than the sum of its proper divisors (46223468016).

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

20266036800 is a wasteful number, since it uses less digits than its factorization.

20266036800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222116 (or 4222101 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 20266036800 in words is "twenty billion, two hundred sixty-six million, thirty-six thousand, eight hundred".