281138602048 has 28 divisors (see below), whose sum is σ = 569754300672. Its totient is φ = 137578463360.

The previous prime is 281138602021. The next prime is 281138602079. The reversal of 281138602048 is 840206831182.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 281138601995 and 281138602013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46728808 + ... + 46734823.

Almost surely, 2^281138602048 is an apocalyptic number.

It is an amenable number.

281138602048 is an abundant number, since it is smaller than the sum of its proper divisors (288615698624).

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

281138602048 is an equidigital number, since it uses as much as digits as its factorization.

281138602048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93463690 (or 93463680 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 281138602048 in words is "two hundred eighty-one billion, one hundred thirty-eight million, six hundred two thousand, forty-eight".