681548192472 has 96 divisors (see below), whose sum is σ = 1951898457600. Its totient is φ = 194267353920.

The previous prime is 681548192447. The next prime is 681548192477. The reversal of 681548192472 is 274291845186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681548192477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31196929 + ... + 31218767.

It is an arithmetic number, because the mean of its divisors is an integer number (20332275600).

Almost surely, 2^681548192472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681548192472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975949228800).

681548192472 is an abundant number, since it is smaller than the sum of its proper divisors (1270350265128).

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

681548192472 is a wasteful number, since it uses less digits than its factorization.

681548192472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22717 (or 22282 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The spelling of 681548192472 in words is "six hundred eighty-one billion, five hundred forty-eight million, one hundred ninety-two thousand, four hundred seventy-two".