681095888242 has 16 divisors (see below), whose sum is σ = 1273737765312. Its totient is φ = 265362034320.

The previous prime is 681095888203. The next prime is 681095888299. The reversal of 681095888242 is 242888590186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211350133 + ... + 2211350440.

It is an arithmetic number, because the mean of its divisors is an integer number (79608610332).

Almost surely, 2^681095888242 is an apocalyptic number.

681095888242 is a deficient number, since it is larger than the sum of its proper divisors (592641877070).

681095888242 is a wasteful number, since it uses less digits than its factorization.

681095888242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422700593.

The product of its (nonzero) digits is 17694720, while the sum is 61.

The spelling of 681095888242 in words is "six hundred eighty-one billion, ninety-five million, eight hundred eighty-eight thousand, two hundred forty-two".