681147440010 has 48 divisors (see below), whose sum is σ = 1771037951904. Its totient is φ = 181633716576.

The previous prime is 681147439961. The next prime is 681147440053. The reversal of 681147440010 is 10044741186.

681147440010 is a `hidden beast` number, since 68 + 1 + 147 + 440 + 0 + 10 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3405849 + ... + 3600291.

It is an arithmetic number, because the mean of its divisors is an integer number (36896623998).

Almost surely, 2^681147440010 is an apocalyptic number.

681147440010 is an abundant number, since it is smaller than the sum of its proper divisors (1089890511894).

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

681147440010 is a wasteful number, since it uses less digits than its factorization.

681147440010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233379 (or 233376 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 681147440010 in words is "six hundred eighty-one billion, one hundred forty-seven million, four hundred forty thousand, ten".