20412253501513 has 8 divisors (see below), whose sum is σ = 21194622923400. Its totient is φ = 19635117320448.

The previous prime is 20412253501429. The next prime is 20412253501547. The reversal of 20412253501513 is 31510535221402.

It can be written as a sum of positive squares in 4 ways, for example, as 4566734808064 + 15845518693449 = 2136992^2 + 3980643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20412253501513 - 2¹³ = 20412253493321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412253501583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308302256 + ... + 1308317857.

It is an arithmetic number, because the mean of its divisors is an integer number (2649327865425).

Almost surely, 2^{20412253501513} is an apocalyptic number.

It is an amenable number.

20412253501513 is a deficient number, since it is larger than the sum of its proper divisors (782369421887).

20412253501513 is a wasteful number, since it uses less digits than its factorization.

20412253501513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616620411.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 20412253501513 its reverse (31510535221402), we get a palindrome (51922788722915).

The spelling of 20412253501513 in words is "twenty trillion, four hundred twelve billion, two hundred fifty-three million, five hundred one thousand, five hundred thirteen".