8561281364 has 12 divisors (see below), whose sum is σ = 15770781600. Its totient is φ = 4055343768.

The previous prime is 8561281343. The next prime is 8561281387. The reversal of 8561281364 is 4631821658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56324144 + ... + 56324295.

It is an arithmetic number, because the mean of its divisors is an integer number (1314231800).

Almost surely, 2^8561281364 is an apocalyptic number.

It is an amenable number.

8561281364 is a deficient number, since it is larger than the sum of its proper divisors (7209500236).

8561281364 is a wasteful number, since it uses less digits than its factorization.

8561281364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112648462 (or 112648460 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 8561281364 is about 92527.1925652130. The cubic root of 8561281364 is about 2045.7203093803.

The spelling of 8561281364 in words is "eight billion, five hundred sixty-one million, two hundred eighty-one thousand, three hundred sixty-four".