16554471357423 has 4 divisors (see below), whose sum is σ = 22072628476568. Its totient is φ = 11036314238280.

The previous prime is 16554471357421. The next prime is 16554471357427. The reversal of 16554471357423 is 32475317445561.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16554471357423 - 2¹ = 16554471357421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554471357421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2759078559568 + ... + 2759078559573.

It is an arithmetic number, because the mean of its divisors is an integer number (5518157119142).

Almost surely, 2^{16554471357423} is an apocalyptic number.

16554471357423 is a deficient number, since it is larger than the sum of its proper divisors (5518157119145).

16554471357423 is an equidigital number, since it uses as much as digits as its factorization.

16554471357423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518157119144.

The product of its digits is 42336000, while the sum is 57.

The spelling of 16554471357423 in words is "sixteen trillion, five hundred fifty-four billion, four hundred seventy-one million, three hundred fifty-seven thousand, four hundred twenty-three".