13785587903 has 4 divisors (see below), whose sum is σ = 13829075880. Its totient is φ = 13742099928.

The previous prime is 13785587899. The next prime is 13785587953. The reversal of 13785587903 is 30978558731.

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 13785587903 - 2² = 13785587899 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 (13785587953) 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, 21743513 + ... + 21744146.

It is an arithmetic number, because the mean of its divisors is an integer number (3457268970).

Almost surely, 2^13785587903 is an apocalyptic number.

13785587903 is a deficient number, since it is larger than the sum of its proper divisors (43487977).

13785587903 is an equidigital number, since it uses as much as digits as its factorization.

13785587903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43487976.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 13785587903 in words is "thirteen billion, seven hundred eighty-five million, five hundred eighty-seven thousand, nine hundred three".