2551888766 has 16 divisors (see below), whose sum is σ = 4383661056. Its totient is φ = 1091417976.

The previous prime is 2551888741. The next prime is 2551888769. The reversal of 2551888766 is 6678881552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551888769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180326 + ... + 193961.

It is an arithmetic number, because the mean of its divisors is an integer number (273978816).

Almost surely, 2^2551888766 is an apocalyptic number.

2551888766 is a deficient number, since it is larger than the sum of its proper divisors (1831772290).

2551888766 is a wasteful number, since it uses less digits than its factorization.

2551888766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374783.

The product of its digits is 6451200, while the sum is 56.

The square root of 2551888766 is about 50516.2228002055. Note that the first 3 decimals coincide. The cubic root of 2551888766 is about 1366.5344354978.

The spelling of 2551888766 in words is "two billion, five hundred fifty-one million, eight hundred eighty-eight thousand, seven hundred sixty-six".