20004391753690 has 16 divisors (see below), whose sum is σ = 36364419070920. Its totient is φ = 7922531387200.

The previous prime is 20004391753673. The next prime is 20004391753691. The reversal of 20004391753690 is 9635719340002.

It can be written as a sum of positive squares in 4 ways, for example, as 19978995825369 + 25395928321 = 4469787^2 + 159361^2 .

It is a super-2 number, since 2×20004391753690² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20004391753691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9903163225 + ... + 9903165244.

Almost surely, 2^{20004391753690} is an apocalyptic number.

20004391753690 is a deficient number, since it is larger than the sum of its proper divisors (16360027317230).

20004391753690 is a wasteful number, since it uses less digits than its factorization.

20004391753690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19806328577.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 20004391753690 in words is "twenty trillion, four billion, three hundred ninety-one million, seven hundred fifty-three thousand, six hundred ninety".