13515240541044 has 192 divisors, whose sum is σ = 35776935936000. Its totient is φ = 3933905356800.

The previous prime is 13515240541031. The next prime is 13515240541111. The reversal of 13515240541044 is 44014504251531.

It is a junction number, because it is equal to n+sod(n) for n = 13515240540993 and 13515240541011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 907847769 + ... + 907862655.

It is an arithmetic number, because the mean of its divisors is an integer number (186338208000).

Almost surely, 2^{13515240541044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13515240541044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17888467968000).

13515240541044 is an abundant number, since it is smaller than the sum of its proper divisors (22261695394956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13515240541044 is a wasteful number, since it uses less digits than its factorization.

13515240541044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16574 (or 16572 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

Adding to 13515240541044 its reverse (44014504251531), we get a palindrome (57529744792575).

The spelling of 13515240541044 in words is "thirteen trillion, five hundred fifteen billion, two hundred forty million, five hundred forty-one thousand, forty-four".