16154223543623 has 4 divisors (see below), whose sum is σ = 17622789320328. Its totient is φ = 14685657766920.

The previous prime is 16154223543593. The next prime is 16154223543677. The reversal of 16154223543623 is 32634532245161.

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

It is a cyclic number.

It is not a de Polignac number, because 16154223543623 - 2¹² = 16154223539527 is a prime.

It is a super-2 number, since 2×16154223543623² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16154223543323) 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, 734282888336 + ... + 734282888357.

It is an arithmetic number, because the mean of its divisors is an integer number (4405697330082).

Almost surely, 2^{16154223543623} is an apocalyptic number.

16154223543623 is a deficient number, since it is larger than the sum of its proper divisors (1468565776705).

16154223543623 is a wasteful number, since it uses less digits than its factorization.

16154223543623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468565776704.

The product of its digits is 3110400, while the sum is 47.

Adding to 16154223543623 its reverse (32634532245161), we get a palindrome (48788755788784).

The spelling of 16154223543623 in words is "sixteen trillion, one hundred fifty-four billion, two hundred twenty-three million, five hundred forty-three thousand, six hundred twenty-three".