2669138563 has 32 divisors (see below), whose sum is σ = 3509757440. Its totient is φ = 1970749440.

The previous prime is 2669138557. The next prime is 2669138603. The reversal of 2669138563 is 3658319662.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2669138563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2669136563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104323 + ... + 127363.

It is an arithmetic number, because the mean of its divisors is an integer number (109679920).

Almost surely, 2^2669138563 is an apocalyptic number.

2669138563 is a deficient number, since it is larger than the sum of its proper divisors (840618877).

2669138563 is a wasteful number, since it uses less digits than its factorization.

2669138563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23147.

The product of its digits is 1399680, while the sum is 49.

The square root of 2669138563 is about 51663.7064388532. The cubic root of 2669138563 is about 1387.1508956728.

The spelling of 2669138563 in words is "two billion, six hundred sixty-nine million, one hundred thirty-eight thousand, five hundred sixty-three".