16554471401233 has 2 divisors, whose sum is σ = 16554471401234. Its totient is φ = 16554471401232.

The previous prime is 16554471401231. The next prime is 16554471401261. The reversal of 16554471401233 is 33210417445561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16530957325584 + 23514075649 = 4065828^2 + 153343^2 .

It is a cyclic number.

It is not a de Polignac number, because 16554471401233 - 2¹ = 16554471401231 is a prime.

Together with 16554471401231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16554471401231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277235700616 + 8277235700617.

It is an arithmetic number, because the mean of its divisors is an integer number (8277235700617).

Almost surely, 2^{16554471401233} is an apocalyptic number.

It is an amenable number.

16554471401233 is a deficient number, since it is larger than the sum of its proper divisors (1).

16554471401233 is an equidigital number, since it uses as much as digits as its factorization.

16554471401233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 46.

Adding to 16554471401233 its reverse (33210417445561), we get a palindrome (49764888846794).

The spelling of 16554471401233 in words is "sixteen trillion, five hundred fifty-four billion, four hundred seventy-one million, four hundred one thousand, two hundred thirty-three".