726438131355 has 64 divisors (see below), whose sum is σ = 1182271749120. Its totient is φ = 380834217984.

The previous prime is 726438131351. The next prime is 726438131429. The reversal of 726438131355 is 553131834627.

It is not a de Polignac number, because 726438131355 - 2² = 726438131351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726438131351) 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 63 ways as a sum of consecutive naturals, for example, 201394962 + ... + 201398568.

It is an arithmetic number, because the mean of its divisors is an integer number (18472996080).

Almost surely, 2^726438131355 is an apocalyptic number.

726438131355 is a deficient number, since it is larger than the sum of its proper divisors (455833617765).

726438131355 is a wasteful number, since it uses less digits than its factorization.

726438131355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548.

The product of its digits is 1814400, while the sum is 48.

The spelling of 726438131355 in words is "seven hundred twenty-six billion, four hundred thirty-eight million, one hundred thirty-one thousand, three hundred fifty-five".