726113215161 has 24 divisors (see below), whose sum is σ = 1090471986240. Its totient is φ = 482831003952.

The previous prime is 726113215117. The next prime is 726113215181. The reversal of 726113215161 is 161512311627.

726113215161 is a `hidden beast` number, since 7 + 2 + 6 + 1 + 132 + 1 + 516 + 1 = 666.

726113215161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 726113215161 - 2¹³ = 726113206969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726113215111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3746245 + ... + 3935298.

It is an arithmetic number, because the mean of its divisors is an integer number (45436332760).

Almost surely, 2^726113215161 is an apocalyptic number.

It is an amenable number.

726113215161 is a deficient number, since it is larger than the sum of its proper divisors (364358771079).

726113215161 is an equidigital number, since it uses as much as digits as its factorization.

726113215161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681947 (or 7681935 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

Adding to 726113215161 its reverse (161512311627), we get a palindrome (887625526788).

The spelling of 726113215161 in words is "seven hundred twenty-six billion, one hundred thirteen million, two hundred fifteen thousand, one hundred sixty-one".