13020112787 has 16 divisors (see below), whose sum is σ = 14273183232. Its totient is φ = 11778748320.

The previous prime is 13020112769. The next prime is 13020112789. The reversal of 13020112787 is 78721102031.

It is a cyclic number.

It is not a de Polignac number, because 13020112787 - 2¹² = 13020108691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13020112789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2239238 + ... + 2245044.

It is an arithmetic number, because the mean of its divisors is an integer number (892073952).

Almost surely, 2^13020112787 is an apocalyptic number.

13020112787 is a deficient number, since it is larger than the sum of its proper divisors (1253070445).

13020112787 is a wasteful number, since it uses less digits than its factorization.

13020112787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778.

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 13020112787 in words is "thirteen billion, twenty million, one hundred twelve thousand, seven hundred eighty-seven".