281881348568 has 16 divisors (see below), whose sum is σ = 545576804160. Its totient is φ = 136394200800.

The previous prime is 281881348543. The next prime is 281881348591. The reversal of 281881348568 is 865843188182.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 281881348568.

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, 568308923 + ... + 568309418.

It is an arithmetic number, because the mean of its divisors is an integer number (34098550260).

Almost surely, 2^281881348568 is an apocalyptic number.

It is an amenable number.

281881348568 is a deficient number, since it is larger than the sum of its proper divisors (263695455592).

281881348568 is a wasteful number, since it uses less digits than its factorization.

281881348568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136618378 (or 1136618374 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 62.

The spelling of 281881348568 in words is "two hundred eighty-one billion, eight hundred eighty-one million, three hundred forty-eight thousand, five hundred sixty-eight".