721060444104 has 256 divisors, whose sum is σ = 2440355420160. Its totient is φ = 172880928000.

The previous prime is 721060444103. The next prime is 721060444109. The reversal of 721060444104 is 401444060127.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (721060444103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2782879 + ... + 3030929.

It is an arithmetic number, because the mean of its divisors is an integer number (9532638360).

Almost surely, 2^721060444104 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 721060444104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220177710080).

721060444104 is an abundant number, since it is smaller than the sum of its proper divisors (1719294976056).

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

721060444104 is a wasteful number, since it uses less digits than its factorization.

721060444104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248113 (or 248087 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 721060444104 in words is "seven hundred twenty-one billion, sixty million, four hundred forty-four thousand, one hundred four".