13491104545 has 16 divisors (see below), whose sum is σ = 17205391440. Its totient is φ = 10120228864.

The previous prime is 13491104533. The next prime is 13491104563. The reversal of 13491104545 is 54540119431.

It can be written as a sum of positive squares in 8 ways, for example, as 200703889 + 13290400656 = 14167^2 + 115284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13491104545 is a prime.

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, 272152 + ... + 317881.

It is an arithmetic number, because the mean of its divisors is an integer number (1075336965).

Almost surely, 2^13491104545 is an apocalyptic number.

It is an amenable number.

13491104545 is a deficient number, since it is larger than the sum of its proper divisors (3714286895).

13491104545 is a wasteful number, since it uses less digits than its factorization.

13491104545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590324.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 13491104545 in words is "thirteen billion, four hundred ninety-one million, one hundred four thousand, five hundred forty-five".