281360643396 has 384 divisors, whose sum is σ = 821211955200. Its totient is φ = 73251053568.

The previous prime is 281360643371. The next prime is 281360643407. The reversal of 281360643396 is 693346063182.

It is a happy number.

It is a super-2 number, since 2×281360643396² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 626638180 + ... + 626638628.

It is an arithmetic number, because the mean of its divisors is an integer number (2138572800).

Almost surely, 2^281360643396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281360643396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410605977600).

281360643396 is an abundant number, since it is smaller than the sum of its proper divisors (539851311804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

281360643396 is a wasteful number, since it uses less digits than its factorization.

281360643396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 51.

The spelling of 281360643396 in words is "two hundred eighty-one billion, three hundred sixty million, six hundred forty-three thousand, three hundred ninety-six".