16642665051 has 8 divisors (see below), whose sum is σ = 22285458000.
Its totient is φ = 11047491072.
The previous prime is 16642665047. The next prime is 16642665073. The reversal of 16642665051 is 15056624661.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 16642665051 - 22 = 16642665047 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 16642664994 and 16642665012.
It is not an unprimeable number, because it can be changed into a prime (16642665031) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11903926 + ... + 11905323.
It is an arithmetic number, because the mean of its divisors is an integer number (2785682250).
Almost surely, 216642665051 is an apocalyptic number.
16642665051 is a deficient number, since it is larger than the sum of its proper divisors (5642792949).
16642665051 is a wasteful number, since it uses less digits than its factorization.
16642665051 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23809485.
The product of its (nonzero) digits is 259200, while the sum is 42.
The spelling of 16642665051 in words is "sixteen billion, six hundred forty-two million, six hundred sixty-five thousand, fifty-one".