16224640126993 has 2 divisors, whose sum is σ = 16224640126994. Its totient is φ = 16224640126992.

The previous prime is 16224640126991. The next prime is 16224640127077. The reversal of 16224640126993 is 39962104642261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14482073803024 + 1742566323969 = 3805532^2 + 1320063^2 .

It is a cyclic number.

It is not a de Polignac number, because 16224640126993 - 2¹ = 16224640126991 is a prime.

Together with 16224640126991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16224640126991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8112320063496 + 8112320063497.

It is an arithmetic number, because the mean of its divisors is an integer number (8112320063497).

Almost surely, 2^{16224640126993} is an apocalyptic number.

It is an amenable number.

16224640126993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16224640126993 is an equidigital number, since it uses as much as digits as its factorization.

16224640126993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 16224640126993 in words is "sixteen trillion, two hundred twenty-four billion, six hundred forty million, one hundred twenty-six thousand, nine hundred ninety-three".