12782517473 has 4 divisors (see below), whose sum is σ = 13944564528. Its totient is φ = 11620470420.

The previous prime is 12782517443. The next prime is 12782517493. The reversal of 12782517473 is 37471528721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12782517473 - 2⁶ = 12782517409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12782517443) 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, 581023511 + ... + 581023532.

It is an arithmetic number, because the mean of its divisors is an integer number (3486141132).

Almost surely, 2^12782517473 is an apocalyptic number.

It is an amenable number.

12782517473 is a deficient number, since it is larger than the sum of its proper divisors (1162047055).

12782517473 is a wasteful number, since it uses less digits than its factorization.

12782517473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162047054.

The product of its digits is 658560, while the sum is 47.

The spelling of 12782517473 in words is "twelve billion, seven hundred eighty-two million, five hundred seventeen thousand, four hundred seventy-three".