20043797620900 has 27 divisors (see below), whose sum is σ = 43495137989121. Its totient is φ = 8017501140240.

The previous prime is 20043797620793. The next prime is 20043797620927. The reversal of 20043797620900 is 902679734002.

It is a happy number.

The square root of 20043797620900 is 4477030.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7215767143524 + 12828030477376 = 2686218^2 + 3581624^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44546449 + ... + 44994151.

Almost surely, 2^{20043797620900} is an apocalyptic number.

20043797620900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

20043797620900 is the 4477030-th square number.

It is an amenable number.

20043797620900 is an abundant number, since it is smaller than the sum of its proper divisors (23451340368221).

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

20043797620900 is an frugal number, since it uses more digits than its factorization.

20043797620900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895420 (or 447710 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

Multiplying 20043797620900 by its sum of digits (49), we get a square (982146083424100 = 31339210²).

The spelling of 20043797620900 in words is "twenty trillion, forty-three billion, seven hundred ninety-seven million, six hundred twenty thousand, nine hundred".