20415644513162 has 16 divisors (see below), whose sum is σ = 31045965907272. Its totient is φ = 10067016234240.

The previous prime is 20415644513161. The next prime is 20415644513207. The reversal of 20415644513162 is 26131544651402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20238562615441 + 177081897721 = 4498729^2 + 420811^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20415644513161) 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, 5238539 + ... + 8262782.

Almost surely, 2^{20415644513162} is an apocalyptic number.

20415644513162 is a deficient number, since it is larger than the sum of its proper divisors (10630321394110).

20415644513162 is a wasteful number, since it uses less digits than its factorization.

20415644513162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13511753.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 20415644513162 in words is "twenty trillion, four hundred fifteen billion, six hundred forty-four million, five hundred thirteen thousand, one hundred sixty-two".