13519445372161 has 4 divisors (see below), whose sum is σ = 13519571500800. Its totient is φ = 13519319243524.

The previous prime is 13519445372101. The next prime is 13519445372201. The reversal of 13519445372161 is 16127354491531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13519445372161 - 2¹³ = 13519445363969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13519445372099 and 13519445372108.

It is not an unprimeable number, because it can be changed into a prime (13519445372101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62903401 + ... + 63117958.

It is an arithmetic number, because the mean of its divisors is an integer number (3379892875200).

Almost surely, 2^{13519445372161} is an apocalyptic number.

It is an amenable number.

13519445372161 is a deficient number, since it is larger than the sum of its proper divisors (126128639).

13519445372161 is a wasteful number, since it uses less digits than its factorization.

13519445372161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126128638.

The product of its digits is 2721600, while the sum is 52.

The spelling of 13519445372161 in words is "thirteen trillion, five hundred nineteen billion, four hundred forty-five million, three hundred seventy-two thousand, one hundred sixty-one".