2564367281 has 16 divisors (see below), whose sum is σ = 3090447360. Its totient is φ = 2078634960.

The previous prime is 2564367277. The next prime is 2564367283. The reversal of 2564367281 is 1827634652.

It is not a de Polignac number, because 2564367281 - 2² = 2564367277 is a prime.

It is a super-2 number, since 2×2564367281² = 13151959103726665922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2564367283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59060 + ... + 92826.

It is an arithmetic number, because the mean of its divisors is an integer number (193152960).

Almost surely, 2^2564367281 is an apocalyptic number.

It is an amenable number.

2564367281 is a deficient number, since it is larger than the sum of its proper divisors (526080079).

2564367281 is a wasteful number, since it uses less digits than its factorization.

2564367281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34364.

The product of its digits is 483840, while the sum is 44.

The square root of 2564367281 is about 50639.5821566490. The cubic root of 2564367281 is about 1368.7582263818.

The spelling of 2564367281 in words is "two billion, five hundred sixty-four million, three hundred sixty-seven thousand, two hundred eighty-one".