681423504370 has 48 divisors (see below), whose sum is σ = 1440944387928. Its totient is φ = 231317721600.

The previous prime is 681423504331. The next prime is 681423504371. The reversal of 681423504370 is 73405324186.

It can be written as a sum of positive squares in 4 ways, for example, as 644906969721 + 36516534649 = 803061^2 + 191093^2 .

It is not an unprimeable number, because it can be changed into a prime (681423504371) 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 23 ways as a sum of consecutive naturals, for example, 6834967 + ... + 6933946.

Almost surely, 2^681423504370 is an apocalyptic number.

681423504370 is an abundant number, since it is smaller than the sum of its proper divisors (759520883558).

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

681423504370 is a wasteful number, since it uses less digits than its factorization.

681423504370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13769035 (or 13769028 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 681423504370 in words is "six hundred eighty-one billion, four hundred twenty-three million, five hundred four thousand, three hundred seventy".