55281647865 has 8 divisors (see below), whose sum is σ = 88450636608. Its totient is φ = 29483545520.

The previous prime is 55281647797. The next prime is 55281647873. The reversal of 55281647865 is 56874618255.

55281647865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55281647865 - 2¹⁰ = 55281646841 is a prime.

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, 1842721581 + ... + 1842721610.

It is an arithmetic number, because the mean of its divisors is an integer number (11056329576).

Almost surely, 2^55281647865 is an apocalyptic number.

It is an amenable number.

55281647865 is a deficient number, since it is larger than the sum of its proper divisors (33168988743).

55281647865 is a wasteful number, since it uses less digits than its factorization.

55281647865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685443199.

The product of its digits is 16128000, while the sum is 57.

The spelling of 55281647865 in words is "fifty-five billion, two hundred eighty-one million, six hundred forty-seven thousand, eight hundred sixty-five".