20044515413 has 4 divisors (see below), whose sum is σ = 21586401228. Its totient is φ = 18502629600.

The previous prime is 20044515371. The next prime is 20044515427. The reversal of 20044515413 is 31451544002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12402608689 + 7641906724 = 111367^2 + 87418^2 .

It is not a de Polignac number, because 20044515413 - 2²² = 20040321109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044515493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770942888 + ... + 770942913.

It is an arithmetic number, because the mean of its divisors is an integer number (5396600307).

Almost surely, 2^20044515413 is an apocalyptic number.

It is an amenable number.

20044515413 is a deficient number, since it is larger than the sum of its proper divisors (1541885815).

20044515413 is a wasteful number, since it uses less digits than its factorization.

20044515413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541885814.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 20044515413 in words is "twenty billion, forty-four million, five hundred fifteen thousand, four hundred thirteen".