707420272721 has 2 divisors, whose sum is σ = 707420272722. Its totient is φ = 707420272720.

The previous prime is 707420272717. The next prime is 707420272729. The reversal of 707420272721 is 127272024707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 452283150400 + 255137122321 = 672520^2 + 505111^2 .

It is an emirp because it is prime and its reverse (127272024707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 707420272721 - 2² = 707420272717 is a prime.

It is not a weakly prime, because it can be changed into another prime (707420272729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353710136360 + 353710136361.

It is an arithmetic number, because the mean of its divisors is an integer number (353710136361).

Almost surely, 2^707420272721 is an apocalyptic number.

It is an amenable number.

707420272721 is a deficient number, since it is larger than the sum of its proper divisors (1).

707420272721 is an equidigital number, since it uses as much as digits as its factorization.

707420272721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153664, while the sum is 41.

The spelling of 707420272721 in words is "seven hundred seven billion, four hundred twenty million, two hundred seventy-two thousand, seven hundred twenty-one".