20113135121513 has 48 divisors (see below), whose sum is σ = 24858420480000. Its totient is φ = 16180456658688.

The previous prime is 20113135121507. The next prime is 20113135121549. The reversal of 20113135121513 is 31512153131102.

It is a happy number.

It is not a de Polignac number, because 20113135121513 - 2⁶ = 20113135121449 is a prime.

It is a super-2 number, since 2×20113135121513² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20113135121593) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52940093 + ... + 53318661.

It is an arithmetic number, because the mean of its divisors is an integer number (517883760000).

Almost surely, 2^{20113135121513} is an apocalyptic number.

It is an amenable number.

20113135121513 is a deficient number, since it is larger than the sum of its proper divisors (4745285358487).

20113135121513 is a wasteful number, since it uses less digits than its factorization.

20113135121513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379134 (or 379127 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

Adding to 20113135121513 its reverse (31512153131102), we get a palindrome (51625288252615).

The spelling of 20113135121513 in words is "twenty trillion, one hundred thirteen billion, one hundred thirty-five million, one hundred twenty-one thousand, five hundred thirteen".