13955105787 has 32 divisors (see below), whose sum is σ = 21596112384. Its totient is φ = 7850304000.

The previous prime is 13955105779. The next prime is 13955105789. The reversal of 13955105787 is 78750155931.

It is a happy number.

It is not a de Polignac number, because 13955105787 - 2³ = 13955105779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13955105789) 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, 3939237 + ... + 3942777.

It is an arithmetic number, because the mean of its divisors is an integer number (674878512).

Almost surely, 2^13955105787 is an apocalyptic number.

13955105787 is a deficient number, since it is larger than the sum of its proper divisors (7641006597).

13955105787 is a wasteful number, since it uses less digits than its factorization.

13955105787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419.

The product of its (nonzero) digits is 1323000, while the sum is 51.

The spelling of 13955105787 in words is "thirteen billion, nine hundred fifty-five million, one hundred five thousand, seven hundred eighty-seven".