12779361503 has 12 divisors (see below), whose sum is σ = 12897434448. Its totient is φ = 12662226720.

The previous prime is 12779361493. The next prime is 12779361509. The reversal of 12779361503 is 30516397721.

It is not a de Polignac number, because 12779361503 - 2¹² = 12779357407 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 (12779361509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12394598 + ... + 12395628.

It is an arithmetic number, because the mean of its divisors is an integer number (1074786204).

Almost surely, 2^12779361503 is an apocalyptic number.

12779361503 is a deficient number, since it is larger than the sum of its proper divisors (118072945).

12779361503 is an equidigital number, since it uses as much as digits as its factorization.

12779361503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 12779361503 in words is "twelve billion, seven hundred seventy-nine million, three hundred sixty-one thousand, five hundred three".