16618429043 has 4 divisors (see below), whose sum is σ = 16890862368. Its totient is φ = 16345995720.

The previous prime is 16618429031. The next prime is 16618429081. The reversal of 16618429043 is 34092481661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34092481661 = 7 ⋅4870354523.

It is a cyclic number.

It is not a de Polignac number, because 16618429043 - 2⁸ = 16618428787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16618428985 and 16618429003.

It is not an unprimeable number, because it can be changed into a prime (16618429643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136216571 + ... + 136216692.

It is an arithmetic number, because the mean of its divisors is an integer number (4222715592).

Almost surely, 2^16618429043 is an apocalyptic number.

16618429043 is a deficient number, since it is larger than the sum of its proper divisors (272433325).

16618429043 is an equidigital number, since it uses as much as digits as its factorization.

16618429043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272433324.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 16618429043 in words is "sixteen billion, six hundred eighteen million, four hundred twenty-nine thousand, forty-three".