681566424484 has 24 divisors (see below), whose sum is σ = 1306854259200. Its totient is φ = 308450064480.

The previous prime is 681566424481. The next prime is 681566424593. The reversal of 681566424484 is 484424665186.

It is not an unprimeable number, because it can be changed into a prime (681566424481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33811204 + ... + 33831355.

It is an arithmetic number, because the mean of its divisors is an integer number (54452260800).

Almost surely, 2^681566424484 is an apocalyptic number.

It is an amenable number.

681566424484 is a deficient number, since it is larger than the sum of its proper divisors (625287834716).

681566424484 is a wasteful number, since it uses less digits than its factorization.

681566424484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67642803 (or 67642801 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 58.

The spelling of 681566424484 in words is "six hundred eighty-one billion, five hundred sixty-six million, four hundred twenty-four thousand, four hundred eighty-four".