721074000000 has 448 divisors, whose sum is σ = 2446056190080. Its totient is φ = 188121600000.

The previous prime is 721073999959. The next prime is 721074000007. The reversal of 721074000000 is 470127.

It is not an unprimeable number, because it can be changed into a prime (721074000007) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 281998722 + ... + 282001278.

Almost surely, 2^721074000000 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 721074000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223028095040).

721074000000 is an abundant number, since it is smaller than the sum of its proper divisors (1724982190080).

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

721074000000 is an frugal number, since it uses more digits than its factorization.

721074000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651 (or 2614 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

Adding to 721074000000 its reverse (470127), we get a palindrome (721074470127).

The spelling of 721074000000 in words is "seven hundred twenty-one billion, seventy-four million", and thus it is an aban number.