2566049542 has 20 divisors (see below), whose sum is σ = 4490327916. Its totient is φ = 1099733460.

The previous prime is 2566049501. The next prime is 2566049611. The reversal of 2566049542 is 2459406652.

2566049542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2566049542² = 13169220503996819528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 262384 + ... + 271987.

Almost surely, 2^2566049542 is an apocalyptic number.

2566049542 is a deficient number, since it is larger than the sum of its proper divisors (1924278374).

2566049542 is an frugal number, since it uses more digits than its factorization.

2566049542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534401 (or 534380 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 2566049542 is about 50656.1895724501. The cubic root of 2566049542 is about 1369.0574691708.

The spelling of 2566049542 in words is "two billion, five hundred sixty-six million, forty-nine thousand, five hundred forty-two".