726630551280 has 160 divisors (see below), whose sum is σ = 2503973068800. Its totient is φ = 193680315648.

The previous prime is 726630551279. The next prime is 726630551287. The reversal of 726630551280 is 82155036627.

726630551280 is a `hidden beast` number, since 7 + 2 + 6 + 630 + 5 + 5 + 1 + 2 + 8 + 0 = 666.

726630551280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726630551287) 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, 4761117 + ... + 4911363.

It is an arithmetic number, because the mean of its divisors is an integer number (15649831680).

Almost surely, 2^726630551280 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 726630551280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251986534400).

726630551280 is an abundant number, since it is smaller than the sum of its proper divisors (1777342517520).

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

726630551280 is a wasteful number, since it uses less digits than its factorization.

726630551280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152508 (or 152496 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 726630551280 in words is "seven hundred twenty-six billion, six hundred thirty million, five hundred fifty-one thousand, two hundred eighty".