726666155595 has 24 divisors (see below), whose sum is σ = 1259591267376. Its totient is φ = 387544022208.

The previous prime is 726666155587. The next prime is 726666155597. The reversal of 726666155595 is 595551666627.

It is a happy number.

It is not a de Polignac number, because 726666155595 - 2³ = 726666155587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726666155597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1466964 + ... + 1898766.

It is an arithmetic number, because the mean of its divisors is an integer number (52482969474).

Almost surely, 2^726666155595 is an apocalyptic number.

726666155595 is a deficient number, since it is larger than the sum of its proper divisors (532925111781).

726666155595 is a wasteful number, since it uses less digits than its factorization.

726666155595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469211 (or 469208 counting only the distinct ones).

The product of its digits is 102060000, while the sum is 63.

The spelling of 726666155595 in words is "seven hundred twenty-six billion, six hundred sixty-six million, one hundred fifty-five thousand, five hundred ninety-five".