281479271678056 has 8 divisors (see below), whose sum is σ = 527773634396370. Its totient is φ = 140739635839024.

The previous prime is 281479271678009. The next prime is 281479271678057. The reversal of 281479271678056 is 650876172974182.

It can be written as a sum of positive squares in only one way, i.e., 247208012122500 + 34271259555556 = 15722850^2 + 5854166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×281479271678056² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 281479271678056.

It is not an unprimeable number, because it can be changed into a prime (281479271678057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17592454479871 + ... + 17592454479886.

Almost surely, 2^{281479271678056} is an apocalyptic number.

It is an amenable number.

281479271678056 is a deficient number, since it is larger than the sum of its proper divisors (246294362718314).

281479271678056 is a wasteful number, since it uses less digits than its factorization.

281479271678056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35184908959763 (or 35184908959759 counting only the distinct ones).

The product of its (nonzero) digits is 568995840, while the sum is 73.

The spelling of 281479271678056 in words is "two hundred eighty-one trillion, four hundred seventy-nine billion, two hundred seventy-one million, six hundred seventy-eight thousand, fifty-six".