2561584463 has 8 divisors (see below), whose sum is σ = 2713571280. Its totient is φ = 2409742720.

The previous prime is 2561584423. The next prime is 2561584477. The reversal of 2561584463 is 3644851652.

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

It is a cyclic number.

It is not a de Polignac number, because 2561584463 - 2¹² = 2561580367 is a prime.

It is a super-2 number, since 2×2561584463² = 13123429922165996738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561584423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208 + ... + 71586.

It is an arithmetic number, because the mean of its divisors is an integer number (339196410).

Almost surely, 2^2561584463 is an apocalyptic number.

2561584463 is a deficient number, since it is larger than the sum of its proper divisors (151986817).

2561584463 is a wasteful number, since it uses less digits than its factorization.

2561584463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72537.

The product of its digits is 691200, while the sum is 44.

The square root of 2561584463 is about 50612.0979905003. The cubic root of 2561584463 is about 1368.2629276366.

The spelling of 2561584463 in words is "two billion, five hundred sixty-one million, five hundred eighty-four thousand, four hundred sixty-three".