12785511403 has 8 divisors (see below), whose sum is σ = 14612700672. Its totient is φ = 10958494056.

The previous prime is 12785511383. The next prime is 12785511421. The reversal of 12785511403 is 30411558721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12785511403 - 2⁹ = 12785510891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12785511433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245376 + ... + 292882.

It is an arithmetic number, because the mean of its divisors is an integer number (1826587584).

Almost surely, 2^12785511403 is an apocalyptic number.

12785511403 is a deficient number, since it is larger than the sum of its proper divisors (1827189269).

12785511403 is an equidigital number, since it uses as much as digits as its factorization.

12785511403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85961.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 12785511403 in words is "twelve billion, seven hundred eighty-five million, five hundred eleven thousand, four hundred three".