12671061663 has 64 divisors (see below), whose sum is σ = 18825408000. Its totient is φ = 7533236736.

The previous prime is 12671061661. The next prime is 12671061671. The reversal of 12671061663 is 36616017621.

It is not a de Polignac number, because 12671061663 - 2¹ = 12671061661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671061661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55332033 + ... + 55332261.

It is an arithmetic number, because the mean of its divisors is an integer number (294147000).

Almost surely, 2^12671061663 is an apocalyptic number.

12671061663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12671061663 is a deficient number, since it is larger than the sum of its proper divisors (6154346337).

12671061663 is a wasteful number, since it uses less digits than its factorization.

12671061663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 12671061663 in words is "twelve billion, six hundred seventy-one million, sixty-one thousand, six hundred sixty-three".