724202066981 has 2 divisors, whose sum is σ = 724202066982. Its totient is φ = 724202066980.

The previous prime is 724202066971. The next prime is 724202067089. The reversal of 724202066981 is 189660202427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713121136225 + 11080930756 = 844465^2 + 105266^2 .

It is an emirp because it is prime and its reverse (189660202427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724202066981 is a prime.

It is a super-2 number, since 2×724202066981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724202066971) 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, 362101033490 + 362101033491.

It is an arithmetic number, because the mean of its divisors is an integer number (362101033491).

Almost surely, 2^724202066981 is an apocalyptic number.

It is an amenable number.

724202066981 is a deficient number, since it is larger than the sum of its proper divisors (1).

724202066981 is an equidigital number, since it uses as much as digits as its factorization.

724202066981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 724202066981 in words is "seven hundred twenty-four billion, two hundred two million, sixty-six thousand, nine hundred eighty-one".