16554423244351 has 2 divisors, whose sum is σ = 16554423244352. Its totient is φ = 16554423244350.

The previous prime is 16554423244327. The next prime is 16554423244357. The reversal of 16554423244351 is 15344232445561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16554423244351 is a prime.

It is a super-2 number, since 2×16554423244351² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16554423244295 and 16554423244304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16554423244357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277211622175 + 8277211622176.

It is an arithmetic number, because the mean of its divisors is an integer number (8277211622176).

Almost surely, 2^{16554423244351} is an apocalyptic number.

16554423244351 is a deficient number, since it is larger than the sum of its proper divisors (1).

16554423244351 is an equidigital number, since it uses as much as digits as its factorization.

16554423244351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912000, while the sum is 49.

The spelling of 16554423244351 in words is "sixteen trillion, five hundred fifty-four billion, four hundred twenty-three million, two hundred forty-four thousand, three hundred fifty-one".