13115444134454 has 32 divisors (see below), whose sum is σ = 20818466532864. Its totient is φ = 6184016213760.

The previous prime is 13115444134423. The next prime is 13115444134501. The reversal of 13115444134454 is 45443144451131.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105602837 + ... + 105726959.

It is an arithmetic number, because the mean of its divisors is an integer number (650577079152).

Almost surely, 2^{13115444134454} is an apocalyptic number.

13115444134454 is a deficient number, since it is larger than the sum of its proper divisors (7703022398410).

13115444134454 is a wasteful number, since it uses less digits than its factorization.

13115444134454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156572.

The product of its digits is 921600, while the sum is 44.

Adding to 13115444134454 its reverse (45443144451131), we get a palindrome (58558588585585).

The spelling of 13115444134454 in words is "thirteen trillion, one hundred fifteen billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred fifty-four".