12783617671 has 8 divisors (see below), whose sum is σ = 14000031504. Its totient is φ = 11576248320.

The previous prime is 12783617647. The next prime is 12783617711. The reversal of 12783617671 is 17671638721.

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 12783617671 - 2¹³ = 12783609479 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 (12783617611) 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, 2258160 + ... + 2263813.

It is an arithmetic number, because the mean of its divisors is an integer number (1750003938).

Almost surely, 2^12783617671 is an apocalyptic number.

12783617671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12783617671 is a deficient number, since it is larger than the sum of its proper divisors (1216413833).

12783617671 is a wasteful number, since it uses less digits than its factorization.

12783617671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522241.

The product of its digits is 592704, while the sum is 49.

The spelling of 12783617671 in words is "twelve billion, seven hundred eighty-three million, six hundred seventeen thousand, six hundred seventy-one".