16542045389 has 4 divisors (see below), whose sum is σ = 16542332256. Its totient is φ = 16541758524.

The previous prime is 16542045379. The next prime is 16542045391. The reversal of 16542045389 is 98354024561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98354024561 = 13 ⋅7565694197.

It is a cyclic number.

It is not a de Polignac number, because 16542045389 - 2³² = 12247078093 is a prime.

It is a super-2 number, since 2×16542045389² (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 (16542045329) 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, 23519 + ... + 183404.

It is an arithmetic number, because the mean of its divisors is an integer number (4135583064).

Almost surely, 2^16542045389 is an apocalyptic number.

It is an amenable number.

16542045389 is a deficient number, since it is larger than the sum of its proper divisors (286867).

16542045389 is an equidigital number, since it uses as much as digits as its factorization.

16542045389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286866.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 16542045389 in words is "sixteen billion, five hundred forty-two million, forty-five thousand, three hundred eighty-nine".