726766164644 has 48 divisors (see below), whose sum is σ = 1389838383360. Its totient is φ = 330498430080.

The previous prime is 726766164623. The next prime is 726766164721. The reversal of 726766164644 is 446461667627.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5894177 + ... + 6016215.

It is an arithmetic number, because the mean of its divisors is an integer number (28954966320).

Almost surely, 2^726766164644 is an apocalyptic number.

It is an amenable number.

726766164644 is a deficient number, since it is larger than the sum of its proper divisors (663072218716).

726766164644 is a wasteful number, since it uses less digits than its factorization.

726766164644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123740 (or 123738 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 59.

The spelling of 726766164644 in words is "seven hundred twenty-six billion, seven hundred sixty-six million, one hundred sixty-four thousand, six hundred forty-four".