13785503999 has 2 divisors, whose sum is σ = 13785504000. Its totient is φ = 13785503998.

The previous prime is 13785503971. The next prime is 13785504001. The reversal of 13785503999 is 99930558731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13785503999 - 2³² = 9490536703 is a prime.

It is a Sophie Germain prime.

Together with 13785504001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13785503929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6892751999 + 6892752000.

It is an arithmetic number, because the mean of its divisors is an integer number (6892752000).

Almost surely, 2^13785503999 is an apocalyptic number.

13785503999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13785503999 is an equidigital number, since it uses as much as digits as its factorization.

13785503999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9185400, while the sum is 59.

The spelling of 13785503999 in words is "thirteen billion, seven hundred eighty-five million, five hundred three thousand, nine hundred ninety-nine".