681244388130 has 32 divisors (see below), whose sum is σ = 1679175359424. Its totient is φ = 176755300416.

The previous prime is 681244388107. The next prime is 681244388147. The reversal of 681244388130 is 31883442186.

681244388130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 681244388130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306865732 + ... + 306867951.

It is an arithmetic number, because the mean of its divisors is an integer number (52474229982).

Almost surely, 2^681244388130 is an apocalyptic number.

681244388130 is an abundant number, since it is smaller than the sum of its proper divisors (997930971294).

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

681244388130 is a wasteful number, since it uses less digits than its factorization.

681244388130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613733730.

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 681244388130 in words is "six hundred eighty-one billion, two hundred forty-four million, three hundred eighty-eight thousand, one hundred thirty".