2566847440 has 40 divisors (see below), whose sum is σ = 5975430048. Its totient is φ = 1025447040.

The previous prime is 2566847417. The next prime is 2566847453. The reversal of 2566847440 is 447486652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45099 + ... + 84661.

Almost surely, 2^2566847440 is an apocalyptic number.

2566847440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2566847440 is an abundant number, since it is smaller than the sum of its proper divisors (3408582608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2566847440 is a wasteful number, since it uses less digits than its factorization.

2566847440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40387 (or 40381 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 46.

The square root of 2566847440 is about 50664.0645823053. The cubic root of 2566847440 is about 1369.1993545860.

The spelling of 2566847440 in words is "two billion, five hundred sixty-six million, eight hundred forty-seven thousand, four hundred forty".