602581309681 has 32 divisors (see below), whose sum is σ = 696554546688. Its totient is φ = 516350438400.

The previous prime is 602581309651. The next prime is 602581309789. The reversal of 602581309681 is 186903185206.

It is not a de Polignac number, because 602581309681 - 2¹¹ = 602581307633 is a prime.

It is a super-2 number, since 2×602581309681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (602581309651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5819100 + ... + 5921746.

It is an arithmetic number, because the mean of its divisors is an integer number (21767329584).

Almost surely, 2^602581309681 is an apocalyptic number.

It is an amenable number.

602581309681 is a deficient number, since it is larger than the sum of its proper divisors (93973237007).

602581309681 is a wasteful number, since it uses less digits than its factorization.

602581309681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103041.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 602581309681 in words is "six hundred two billion, five hundred eighty-one million, three hundred nine thousand, six hundred eighty-one".