2056243538663 has 4 divisors (see below), whose sum is σ = 2056246437168. Its totient is φ = 2056240640160.

The previous prime is 2056243538621. The next prime is 2056243538669. The reversal of 2056243538663 is 3668353426502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2056243538663 - 2²² = 2056239344359 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 (2056243538669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409670 + ... + 2068892.

It is an arithmetic number, because the mean of its divisors is an integer number (514061609292).

Almost surely, 2^{2056243538663} is an apocalyptic number.

2056243538663 is a deficient number, since it is larger than the sum of its proper divisors (2898505).

2056243538663 is a wasteful number, since it uses less digits than its factorization.

2056243538663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898504.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 2056243538663 in words is "two trillion, fifty-six billion, two hundred forty-three million, five hundred thirty-eight thousand, six hundred sixty-three".