16554423244357 has 2 divisors, whose sum is σ = 16554423244358. Its totient is φ = 16554423244356.

The previous prime is 16554423244351. The next prime is 16554423244361. The reversal of 16554423244357 is 75344232445561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16536918366721 + 17504877636 = 4066561^2 + 132306^2 .

It is a cyclic number.

It is not a de Polignac number, because 16554423244357 - 2³⁹ = 16004667430469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16554423244298 and 16554423244307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16554423244351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277211622178 + 8277211622179.

It is an arithmetic number, because the mean of its divisors is an integer number (8277211622179).

Almost surely, 2^{16554423244357} is an apocalyptic number.

It is an amenable number.

16554423244357 is a deficient number, since it is larger than the sum of its proper divisors (1).

16554423244357 is an equidigital number, since it uses as much as digits as its factorization.

16554423244357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384000, while the sum is 55.

The spelling of 16554423244357 in words is "sixteen trillion, five hundred fifty-four billion, four hundred twenty-three million, two hundred forty-four thousand, three hundred fifty-seven".