16653973787123 has 2 divisors, whose sum is σ = 16653973787124. Its totient is φ = 16653973787122.

The previous prime is 16653973787119. The next prime is 16653973787137. The reversal of 16653973787123 is 32178737935661.

16653973787123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16653973787123 - 2² = 16653973787119 is a prime.

It is not a weakly prime, because it can be changed into another prime (16653973787153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8326986893561 + 8326986893562.

It is an arithmetic number, because the mean of its divisors is an integer number (8326986893562).

Almost surely, 2^{16653973787123} is an apocalyptic number.

16653973787123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16653973787123 is an equidigital number, since it uses as much as digits as its factorization.

16653973787123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 68.

The spelling of 16653973787123 in words is "sixteen trillion, six hundred fifty-three billion, nine hundred seventy-three million, seven hundred eighty-seven thousand, one hundred twenty-three".