13516378419 has 4 divisors (see below), whose sum is σ = 18021837896. Its totient is φ = 9010918944.

The previous prime is 13516378409. The next prime is 13516378453. The reversal of 13516378419 is 91487361531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91487361531 = 3 ⋅30495787177.

It is not a de Polignac number, because 13516378419 - 2⁸ = 13516378163 is a prime.

It is a super-2 number, since 2×13516378419² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13516378409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252729734 + ... + 2252729739.

It is an arithmetic number, because the mean of its divisors is an integer number (4505459474).

Almost surely, 2^13516378419 is an apocalyptic number.

13516378419 is a deficient number, since it is larger than the sum of its proper divisors (4505459477).

13516378419 is an equidigital number, since it uses as much as digits as its factorization.

13516378419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505459476.

The product of its digits is 544320, while the sum is 48.

The spelling of 13516378419 in words is "thirteen billion, five hundred sixteen million, three hundred seventy-eight thousand, four hundred nineteen".