681460018950 has 96 divisors (see below), whose sum is σ = 1738056257280. Its totient is φ = 176570928000.

The previous prime is 681460018949. The next prime is 681460018951. The reversal of 681460018950 is 59810064186.

It is an interprime number because it is at equal distance from previous prime (681460018949) and next prime (681460018951).

It is a self number, because there is not a number n which added to its sum of digits gives 681460018950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681460018951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4018375 + ... + 4184525.

It is an arithmetic number, because the mean of its divisors is an integer number (18104752680).

Almost surely, 2^681460018950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681460018950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (869028128640).

681460018950 is an abundant number, since it is smaller than the sum of its proper divisors (1056596238330).

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

681460018950 is a wasteful number, since it uses less digits than its factorization.

681460018950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166942 (or 166937 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 681460018950 in words is "six hundred eighty-one billion, four hundred sixty million, eighteen thousand, nine hundred fifty".