726916619628 has 96 divisors (see below), whose sum is σ = 1949935680000. Its totient is φ = 233908073280.

The previous prime is 726916619621. The next prime is 726916619629. The reversal of 726916619628 is 826916619627.

726916619628 is a `hidden beast` number, since 7 + 2 + 6 + 9 + 1 + 6 + 619 + 6 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (726916619621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20650483 + ... + 20685653.

It is an arithmetic number, because the mean of its divisors is an integer number (20311830000).

Almost surely, 2^726916619628 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 726916619628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974967840000).

726916619628 is an abundant number, since it is smaller than the sum of its proper divisors (1223019060372).

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

726916619628 is a wasteful number, since it uses less digits than its factorization.

726916619628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41812 (or 41804 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

Subtracting 726916619628 from its reverse (826916619627), we obtain a palindrome (99999999999).

The spelling of 726916619628 in words is "seven hundred twenty-six billion, nine hundred sixteen million, six hundred nineteen thousand, six hundred twenty-eight".