721965414632 has 96 divisors (see below), whose sum is σ = 1729881524160. Its totient is φ = 274424217600.

The previous prime is 721965414629. The next prime is 721965414641. The reversal of 721965414632 is 236414569127.

721965414632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686888 + ... + 1384104.

It is an arithmetic number, because the mean of its divisors is an integer number (18019599210).

Almost surely, 2^721965414632 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 721965414632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864940762080).

721965414632 is an abundant number, since it is smaller than the sum of its proper divisors (1007916109528).

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

721965414632 is a wasteful number, since it uses less digits than its factorization.

721965414632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697323 (or 697278 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The spelling of 721965414632 in words is "seven hundred twenty-one billion, nine hundred sixty-five million, four hundred fourteen thousand, six hundred thirty-two".