721741081482 has 80 divisors (see below), whose sum is σ = 1639072761480. Its totient is φ = 237347407872.

The previous prime is 721741081463. The next prime is 721741081507. The reversal of 721741081482 is 284180147127.

721741081482 is a `hidden beast` number, since 7 + 21 + 74 + 1 + 0 + 81 + 482 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 500682192921 + 221058888561 = 707589^2 + 470169^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4908894 + ... + 5053782.

Almost surely, 2^721741081482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 721741081482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819536380740).

721741081482 is an abundant number, since it is smaller than the sum of its proper divisors (917331679998).

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

721741081482 is a wasteful number, since it uses less digits than its factorization.

721741081482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145317 (or 145308 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 721741081482 in words is "seven hundred twenty-one billion, seven hundred forty-one million, eighty-one thousand, four hundred eighty-two".