20253104540513 has 32 divisors (see below), whose sum is σ = 22835061817344. Its totient is φ = 17822935513152.

The previous prime is 20253104540509. The next prime is 20253104540519. The reversal of 20253104540513 is 31504540135202.

It is a cyclic number.

It is not a de Polignac number, because 20253104540513 - 2² = 20253104540509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20253104540519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119386370 + ... + 119555892.

It is an arithmetic number, because the mean of its divisors is an integer number (713595681792).

Almost surely, 2^{20253104540513} is an apocalyptic number.

20253104540513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20253104540513 is a deficient number, since it is larger than the sum of its proper divisors (2581957276831).

20253104540513 is a wasteful number, since it uses less digits than its factorization.

20253104540513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170885.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 20253104540513 its reverse (31504540135202), we get a palindrome (51757644675715).

The spelling of 20253104540513 in words is "twenty trillion, two hundred fifty-three billion, one hundred four million, five hundred forty thousand, five hundred thirteen".