681454935742 has 96 divisors (see below), whose sum is σ = 1265461549056. Its totient is φ = 269127489600.

The previous prime is 681454935739. The next prime is 681454935751. The reversal of 681454935742 is 247539454186.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 35462517 + ... + 35481727.

It is an arithmetic number, because the mean of its divisors is an integer number (13181891136).

Almost surely, 2^681454935742 is an apocalyptic number.

681454935742 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

681454935742 is a deficient number, since it is larger than the sum of its proper divisors (584006613314).

681454935742 is a wasteful number, since it uses less digits than its factorization.

681454935742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19382 (or 19335 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 58.

The spelling of 681454935742 in words is "six hundred eighty-one billion, four hundred fifty-four million, nine hundred thirty-five thousand, seven hundred forty-two".