2566364761 has 4 divisors (see below), whose sum is σ = 2717327412. Its totient is φ = 2415402112.

The previous prime is 2566364711. The next prime is 2566364767. The reversal of 2566364761 is 1674636652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1944810000 + 621554761 = 44100^2 + 24931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566364761 - 2⁹ = 2566364249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2566364767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75481300 + ... + 75481333.

It is an arithmetic number, because the mean of its divisors is an integer number (679331853).

Almost surely, 2^2566364761 is an apocalyptic number.

It is an amenable number.

2566364761 is a deficient number, since it is larger than the sum of its proper divisors (150962651).

2566364761 is a wasteful number, since it uses less digits than its factorization.

2566364761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150962650.

The product of its digits is 1088640, while the sum is 46.

The square root of 2566364761 is about 50659.3008341015. The cubic root of 2566364761 is about 1369.1135261888.

The spelling of 2566364761 in words is "two billion, five hundred sixty-six million, three hundred sixty-four thousand, seven hundred sixty-one".