726538931947 has 2 divisors, whose sum is σ = 726538931948. Its totient is φ = 726538931946.

The previous prime is 726538931941. The next prime is 726538931999. The reversal of 726538931947 is 749139835627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726538931947 - 2³¹ = 724391448299 is a prime.

It is not a weakly prime, because it can be changed into another prime (726538931941) 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 as a sum of consecutive naturals, namely, 363269465973 + 363269465974.

It is an arithmetic number, because the mean of its divisors is an integer number (363269465974).

Almost surely, 2^726538931947 is an apocalyptic number.

726538931947 is a deficient number, since it is larger than the sum of its proper divisors (1).

726538931947 is an equidigital number, since it uses as much as digits as its factorization.

726538931947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 64.

The spelling of 726538931947 in words is "seven hundred twenty-six billion, five hundred thirty-eight million, nine hundred thirty-one thousand, nine hundred forty-seven".