281474977042433 has 4 divisors (see below), whose sum is σ = 285330798645828. Its totient is φ = 277619155439040.

The previous prime is 281474977042397. The next prime is 281474977042547. The reversal of 281474977042433 is 334240779474182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235857474953104 + 45617502089329 = 15357652^2 + 6754073^2 .

It is a cyclic number.

It is not a de Polignac number, because 281474977042433 - 2¹⁰ = 281474977041409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281474977042433.

It is not an unprimeable number, because it can be changed into a prime (281474977542433) 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 in 3 ways as a sum of consecutive naturals, for example, 1927910801588 + ... + 1927910801733.

It is an arithmetic number, because the mean of its divisors is an integer number (71332699661457).

Almost surely, 2^{281474977042433} is an apocalyptic number.

It is an amenable number.

281474977042433 is a deficient number, since it is larger than the sum of its proper divisors (3855821603395).

281474977042433 is an equidigital number, since it uses as much as digits as its factorization.

281474977042433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855821603394.

The product of its (nonzero) digits is 227598336, while the sum is 65.

The spelling of 281474977042433 in words is "two hundred eighty-one trillion, four hundred seventy-four billion, nine hundred seventy-seven million, forty-two thousand, four hundred thirty-three".