1264113243663 has 16 divisors (see below), whose sum is σ = 1690905546720. Its totient is φ = 840031880576.

The previous prime is 1264113243647. The next prime is 1264113243689. The reversal of 1264113243663 is 3663423114621.

It is a cyclic number.

It is not a de Polignac number, because 1264113243663 - 2⁴ = 1264113243647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264113245663) 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, 21155593 + ... + 21215261.

It is an arithmetic number, because the mean of its divisors is an integer number (105681596670).

Almost surely, 2^{1264113243663} is an apocalyptic number.

1264113243663 is a deficient number, since it is larger than the sum of its proper divisors (426792303057).

1264113243663 is a wasteful number, since it uses less digits than its factorization.

1264113243663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82266.

The product of its digits is 373248, while the sum is 42.

The spelling of 1264113243663 in words is "one trillion, two hundred sixty-four billion, one hundred thirteen million, two hundred forty-three thousand, six hundred sixty-three".