281681681683026 has 16 divisors (see below), whose sum is σ = 564470167622400. Its totient is φ = 93709426518288.

The previous prime is 281681681683007. The next prime is 281681681683043. The reversal of 281681681683026 is 620386186186182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46116840706 + ... + 46116846813.

It is an arithmetic number, because the mean of its divisors is an integer number (35279385476400).

Almost surely, 2^{281681681683026} is an apocalyptic number.

281681681683026 is an abundant number, since it is smaller than the sum of its proper divisors (282788485939374).

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

281681681683026 is a wasteful number, since it uses less digits than its factorization.

281681681683026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92233688033.

The product of its (nonzero) digits is 63700992, while the sum is 66.

The spelling of 281681681683026 in words is "two hundred eighty-one trillion, six hundred eighty-one billion, six hundred eighty-one million, six hundred eighty-three thousand, twenty-six".