723978919632 has 80 divisors (see below), whose sum is σ = 1908258006528. Its totient is φ = 236467486080.

The previous prime is 723978919513. The next prime is 723978919681. The reversal of 723978919632 is 236919879327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96138 + ... + 1207145.

Almost surely, 2^723978919632 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 723978919632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954129003264).

723978919632 is an abundant number, since it is smaller than the sum of its proper divisors (1184279086896).

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

723978919632 is a wasteful number, since it uses less digits than its factorization.

723978919632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303528 (or 1303522 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 66.

The spelling of 723978919632 in words is "seven hundred twenty-three billion, nine hundred seventy-eight million, nine hundred nineteen thousand, six hundred thirty-two".