281881368124 has 12 divisors (see below), whose sum is σ = 493365209400. Its totient is φ = 140919879728.

The previous prime is 281881368121. The next prime is 281881368137. The reversal of 281881368124 is 421863188182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281881368121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5170579 + ... + 5224810.

It is an arithmetic number, because the mean of its divisors is an integer number (41113767450).

Almost surely, 2^281881368124 is an apocalyptic number.

It is an amenable number.

281881368124 is a deficient number, since it is larger than the sum of its proper divisors (211483841276).

281881368124 is a wasteful number, since it uses less digits than its factorization.

281881368124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402172 (or 10402170 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 52.

The spelling of 281881368124 in words is "two hundred eighty-one billion, eight hundred eighty-one million, three hundred sixty-eight thousand, one hundred twenty-four".