2566042994 has 8 divisors (see below), whose sum is σ = 3858208428. Its totient is φ = 1279973520.

The previous prime is 2566042991. The next prime is 2566043057. The reversal of 2566042994 is 4992406652.

It can be written as a sum of positive squares in 2 ways, for example, as 1469572225 + 1096470769 = 38335^2 + 33113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2566042991) 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 3 ways as a sum of consecutive naturals, for example, 1522937 + ... + 1524620.

Almost surely, 2^2566042994 is an apocalyptic number.

2566042994 is a deficient number, since it is larger than the sum of its proper divisors (1292165434).

2566042994 is a wasteful number, since it uses less digits than its factorization.

2566042994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047980.

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 2566042994 is about 50656.1249406229. The cubic root of 2566042994 is about 1369.0563046575.

The spelling of 2566042994 in words is "two billion, five hundred sixty-six million, forty-two thousand, nine hundred ninety-four".