13247189087 has 4 divisors (see below), whose sum is σ = 14451479016. Its totient is φ = 12042899160.

The previous prime is 13247189077. The next prime is 13247189113. The reversal of 13247189087 is 78098174231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13247189087 - 2²² = 13242994783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13247189077) 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, 602144948 + ... + 602144969.

It is an arithmetic number, because the mean of its divisors is an integer number (3612869754).

Almost surely, 2^13247189087 is an apocalyptic number.

13247189087 is a deficient number, since it is larger than the sum of its proper divisors (1204289929).

13247189087 is a wasteful number, since it uses less digits than its factorization.

13247189087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204289928.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 13247189087 in words is "thirteen billion, two hundred forty-seven million, one hundred eighty-nine thousand, eighty-seven".