681822674051 has 8 divisors (see below), whose sum is σ = 697738329024. Its totient is φ = 665909715240.

The previous prime is 681822674033. The next prime is 681822674053. The reversal of 681822674051 is 150476228186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681822674051 - 2¹⁰ = 681822673027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681822674053) by changing a digit.

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, 157805 + ... + 1178366.

It is an arithmetic number, because the mean of its divisors is an integer number (87217291128).

Almost surely, 2^681822674051 is an apocalyptic number.

681822674051 is a deficient number, since it is larger than the sum of its proper divisors (15915654973).

681822674051 is a wasteful number, since it uses less digits than its factorization.

681822674051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348081.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 681822674051 in words is "six hundred eighty-one billion, eight hundred twenty-two million, six hundred seventy-four thousand, fifty-one".