20445945125204 has 24 divisors (see below), whose sum is σ = 36781817729160. Its totient is φ = 9937371275136.

The previous prime is 20445945125147. The next prime is 20445945125231. The reversal of 20445945125204 is 40252154954402.

It can be written as a sum of positive squares in 4 ways, for example, as 6458195524804 + 13987749600400 = 2541298^2 + 3740020^2 .

It is a super-2 number, since 2×20445945125204² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 64457447 + ... + 64773870.

It is an arithmetic number, because the mean of its divisors is an integer number (1532575738715).

Almost surely, 2^{20445945125204} is an apocalyptic number.

It is an amenable number.

20445945125204 is a deficient number, since it is larger than the sum of its proper divisors (16335872603956).

20445945125204 is a wasteful number, since it uses less digits than its factorization.

20445945125204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129232427 (or 129232425 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 20445945125204 in words is "twenty trillion, four hundred forty-five billion, nine hundred forty-five million, one hundred twenty-five thousand, two hundred four".