13491287104 has 21 divisors (see below), whose sum is σ = 26773616887. Its totient is φ = 6745178944.

The previous prime is 13491287093. The next prime is 13491287107. The reversal of 13491287104 is 40178219431.

The square root of 13491287104 is 116152.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13491287107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 921957 + ... + 936475.

Almost surely, 2^13491287104 is an apocalyptic number.

13491287104 is the 116152-nd square number.

It is an amenable number.

13491287104 is a deficient number, since it is larger than the sum of its proper divisors (13282329783).

13491287104 is an frugal number, since it uses more digits than its factorization.

13491287104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29050 (or 14521 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 13491287104 in words is "thirteen billion, four hundred ninety-one million, two hundred eighty-seven thousand, one hundred four".