281012742609 has 16 divisors (see below), whose sum is σ = 378370871424. Its totient is φ = 185507107200.

The previous prime is 281012742601. The next prime is 281012742641. The reversal of 281012742609 is 906247210182.

It is not a de Polignac number, because 281012742609 - 2³ = 281012742601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (281012742601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984037 + ... + 1237074.

It is an arithmetic number, because the mean of its divisors is an integer number (23648179464).

Almost surely, 2^281012742609 is an apocalyptic number.

It is an amenable number.

281012742609 is a deficient number, since it is larger than the sum of its proper divisors (97358128815).

281012742609 is a wasteful number, since it uses less digits than its factorization.

281012742609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221528.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 281012742609 in words is "two hundred eighty-one billion, twelve million, seven hundred forty-two thousand, six hundred nine".