20004356640250 has 16 divisors (see below), whose sum is σ = 37448155631016. Its totient is φ = 8001742656000.

The previous prime is 20004356640217. The next prime is 20004356640299. The reversal of 20004356640250 is 5204665340002.

It can be written as a sum of positive squares in 4 ways, for example, as 12157864896969 + 7846491743281 = 3486813^2 + 2801159^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40008713031 + ... + 40008713530.

Almost surely, 2^{20004356640250} is an apocalyptic number.

20004356640250 is a deficient number, since it is larger than the sum of its proper divisors (17443798990766).

20004356640250 is an equidigital number, since it uses as much as digits as its factorization.

20004356640250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80017426578 (or 80017426568 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 20004356640250 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred forty thousand, two hundred fifty".