716651732521 has 2 divisors, whose sum is σ = 716651732522. Its totient is φ = 716651732520.

The previous prime is 716651732411. The next prime is 716651732543. The reversal of 716651732521 is 125237156617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614977482025 + 101674250496 = 784205^2 + 318864^2 .

It is an emirp because it is prime and its reverse (125237156617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 716651732521 - 2⁷ = 716651732393 is a prime.

It is not a weakly prime, because it can be changed into another prime (716651732581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358325866260 + 358325866261.

It is an arithmetic number, because the mean of its divisors is an integer number (358325866261).

Almost surely, 2^716651732521 is an apocalyptic number.

It is an amenable number.

716651732521 is a deficient number, since it is larger than the sum of its proper divisors (1).

716651732521 is an equidigital number, since it uses as much as digits as its factorization.

716651732521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 46.

The spelling of 716651732521 in words is "seven hundred sixteen billion, six hundred fifty-one million, seven hundred thirty-two thousand, five hundred twenty-one".