16120120543 has 4 divisors (see below), whose sum is σ = 16968547960. Its totient is φ = 15271693128.

The previous prime is 16120120519. The next prime is 16120120571. The reversal of 16120120543 is 34502102161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34502102161 = 5153 ⋅6695537.

It is a cyclic number.

It is not a de Polignac number, because 16120120543 - 2⁹ = 16120120031 is a prime.

It is a super-2 number, since 2×16120120543² (a number of 21 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 (16120120343) 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, 424213680 + ... + 424213717.

It is an arithmetic number, because the mean of its divisors is an integer number (4242136990).

Almost surely, 2^16120120543 is an apocalyptic number.

16120120543 is a deficient number, since it is larger than the sum of its proper divisors (848427417).

16120120543 is an equidigital number, since it uses as much as digits as its factorization.

16120120543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848427416.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 16120120543 in words is "sixteen billion, one hundred twenty million, one hundred twenty thousand, five hundred forty-three".