16642873643 has 8 divisors (see below), whose sum is σ = 18192845376. Its totient is φ = 15099065800.

The previous prime is 16642873631. The next prime is 16642873651. The reversal of 16642873643 is 34637824661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16642873643 - 2⁶ = 16642873579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16642873591 and 16642873600.

It is not an unprimeable number, because it can be changed into a prime (16642873613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1535321 + ... + 1546122.

It is an arithmetic number, because the mean of its divisors is an integer number (2274105672).

Almost surely, 2^16642873643 is an apocalyptic number.

16642873643 is a deficient number, since it is larger than the sum of its proper divisors (1549971733).

16642873643 is a wasteful number, since it uses less digits than its factorization.

16642873643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081945.

The product of its digits is 3483648, while the sum is 50.

The spelling of 16642873643 in words is "sixteen billion, six hundred forty-two million, eight hundred seventy-three thousand, six hundred forty-three".