20772785200 has 60 divisors (see below), whose sum is σ = 50212949608. Its totient is φ = 8258112000.

The previous prime is 20772785107. The next prime is 20772785213. The reversal of 20772785200 is 258727702.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 94101 + ... + 224500.

Almost surely, 2^20772785200 is an apocalyptic number.

20772785200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20772785200 is an abundant number, since it is smaller than the sum of its proper divisors (29440164408).

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

20772785200 is a wasteful number, since it uses less digits than its factorization.

20772785200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318782 (or 318771 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 20772785200 in words is "twenty billion, seven hundred seventy-two million, seven hundred eighty-five thousand, two hundred".