16642956068 has 12 divisors (see below), whose sum is σ = 29250175500. Its totient is φ = 8285763072.

The previous prime is 16642956017. The next prime is 16642956091. The reversal of 16642956068 is 86065924661.

It can be written as a sum of positive squares in 2 ways, for example, as 7155806464 + 9487149604 = 84592^2 + 97402^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8927693 + ... + 8929556.

It is an arithmetic number, because the mean of its divisors is an integer number (2437514625).

Almost surely, 2^16642956068 is an apocalyptic number.

It is an amenable number.

16642956068 is a deficient number, since it is larger than the sum of its proper divisors (12607219432).

16642956068 is a wasteful number, since it uses less digits than its factorization.

16642956068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17857486 (or 17857484 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 16642956068 in words is "sixteen billion, six hundred forty-two million, nine hundred fifty-six thousand, sixty-eight".