281279489201 has 4 divisors (see below), whose sum is σ = 287264159232. Its totient is φ = 275294819172.

The previous prime is 281279489191. The next prime is 281279489221. The reversal of 281279489201 is 102984972182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 281279489201 - 2³⁰ = 280205747377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281279489221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2992334945 + ... + 2992335038.

It is an arithmetic number, because the mean of its divisors is an integer number (71816039808).

Almost surely, 2^281279489201 is an apocalyptic number.

It is an amenable number.

281279489201 is a deficient number, since it is larger than the sum of its proper divisors (5984670031).

281279489201 is an equidigital number, since it uses as much as digits as its factorization.

281279489201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5984670030.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 281279489201 in words is "two hundred eighty-one billion, two hundred seventy-nine million, four hundred eighty-nine thousand, two hundred one".