16667724348623 has 2 divisors, whose sum is σ = 16667724348624. Its totient is φ = 16667724348622.

The previous prime is 16667724348557. The next prime is 16667724348641. The reversal of 16667724348623 is 32684342776661.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32684342776661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16667724348623 - 2¹² = 16667724344527 is a prime.

It is a super-2 number, since 2×16667724348623² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16667724348623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16667724348643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8333862174311 + 8333862174312.

It is an arithmetic number, because the mean of its divisors is an integer number (8333862174312).

Almost surely, 2^{16667724348623} is an apocalyptic number.

16667724348623 is a deficient number, since it is larger than the sum of its proper divisors (1).

16667724348623 is an equidigital number, since it uses as much as digits as its factorization.

16667724348623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 292626432, while the sum is 65.

The spelling of 16667724348623 in words is "sixteen trillion, six hundred sixty-seven billion, seven hundred twenty-four million, three hundred forty-eight thousand, six hundred twenty-three".