13087816407285 has 32 divisors (see below), whose sum is σ = 21051621638400. Its totient is φ = 6943139278848.

The previous prime is 13087816407283. The next prime is 13087816407371. The reversal of 13087816407285 is 58270461878031.

It is not a de Polignac number, because 13087816407285 - 2¹ = 13087816407283 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087816407283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23366691 + ... + 23920239.

It is an arithmetic number, because the mean of its divisors is an integer number (657863176200).

Almost surely, 2^{13087816407285} is an apocalyptic number.

13087816407285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13087816407285 is a deficient number, since it is larger than the sum of its proper divisors (7963805231115).

13087816407285 is a wasteful number, since it uses less digits than its factorization.

13087816407285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561917.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 13087816407285 in words is "thirteen trillion, eighty-seven billion, eight hundred sixteen million, four hundred seven thousand, two hundred eighty-five".