12705612663 has 16 divisors (see below), whose sum is σ = 17516860416. Its totient is φ = 8183310720.

The previous prime is 12705612641. The next prime is 12705612679. The reversal of 12705612663 is 36621650721.

It is not a de Polignac number, because 12705612663 - 2⁶ = 12705612599 is a prime.

It is a super-2 number, since 2×12705612663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705612613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60045 + ... + 170342.

It is an arithmetic number, because the mean of its divisors is an integer number (1094803776).

Almost surely, 2^12705612663 is an apocalyptic number.

12705612663 is a deficient number, since it is larger than the sum of its proper divisors (4811247753).

12705612663 is a wasteful number, since it uses less digits than its factorization.

12705612663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231014.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 12705612663 in words is "twelve billion, seven hundred five million, six hundred twelve thousand, six hundred sixty-three".