12464745781663 has 16 divisors (see below), whose sum is σ = 14291472937536. Its totient is φ = 10649533489920.

The previous prime is 12464745781651. The next prime is 12464745781681. The reversal of 12464745781663 is 36618754746421.

It is a cyclic number.

It is not a de Polignac number, because 12464745781663 - 2⁹ = 12464745781151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12464745781595 and 12464745781604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12464745781603) 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, 68226345 + ... + 68408797.

It is an arithmetic number, because the mean of its divisors is an integer number (893217058596).

Almost surely, 2^{12464745781663} is an apocalyptic number.

12464745781663 is a deficient number, since it is larger than the sum of its proper divisors (1826727155873).

12464745781663 is a wasteful number, since it uses less digits than its factorization.

12464745781663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213954.

The product of its digits is 162570240, while the sum is 64.

The spelling of 12464745781663 in words is "twelve trillion, four hundred sixty-four billion, seven hundred forty-five million, seven hundred eighty-one thousand, six hundred sixty-three".