281479271678920 has 32 divisors (see below), whose sum is σ = 723803841460800. Its totient is φ = 96507178861248.

The previous prime is 281479271678911. The next prime is 281479271678921. The reversal of 281479271678920 is 29876172974182.

It is not an unprimeable number, because it can be changed into a prime (281479271678921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502641556290 + ... + 502641556849.

It is an arithmetic number, because the mean of its divisors is an integer number (22618870045650).

Almost surely, 2^{281479271678920} is an apocalyptic number.

281479271678920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281479271678920 is an abundant number, since it is smaller than the sum of its proper divisors (442324569781880).

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

281479271678920 is a wasteful number, since it uses less digits than its factorization.

281479271678920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005283113157 (or 1005283113153 counting only the distinct ones).

The product of its (nonzero) digits is 341397504, while the sum is 73.

The spelling of 281479271678920 in words is "two hundred eighty-one trillion, four hundred seventy-nine billion, two hundred seventy-one million, six hundred seventy-eight thousand, nine hundred twenty".