20324544010513 has 8 divisors (see below), whose sum is σ = 20441893890600. Its totient is φ = 20207527986048.

The previous prime is 20324544010499. The next prime is 20324544010567. The reversal of 20324544010513 is 31501044542302.

It can be written as a sum of positive squares in 4 ways, for example, as 105743983489 + 20218800027024 = 325183^2 + 4496532^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20324544010513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324544010583) 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, 83341798 + ... + 83585311.

It is an arithmetic number, because the mean of its divisors is an integer number (2555236736325).

Almost surely, 2^{20324544010513} is an apocalyptic number.

It is an amenable number.

20324544010513 is a deficient number, since it is larger than the sum of its proper divisors (117349880087).

20324544010513 is a wasteful number, since it uses less digits than its factorization.

20324544010513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166927811.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 20324544010513 its reverse (31501044542302), we get a palindrome (51825588552815).

The spelling of 20324544010513 in words is "twenty trillion, three hundred twenty-four billion, five hundred forty-four million, ten thousand, five hundred thirteen".