16642845826 has 24 divisors (see below), whose sum is σ = 26377294464. Its totient is φ = 7874488440.

The previous prime is 16642845811. The next prime is 16642845851. The reversal of 16642845826 is 62854824661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645091 + ... + 670393.

It is an arithmetic number, because the mean of its divisors is an integer number (1099053936).

Almost surely, 2^16642845826 is an apocalyptic number.

16642845826 is a deficient number, since it is larger than the sum of its proper divisors (9734448638).

16642845826 is a wasteful number, since it uses less digits than its factorization.

16642845826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26254 (or 26235 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 52.

The spelling of 16642845826 in words is "sixteen billion, six hundred forty-two million, eight hundred forty-five thousand, eight hundred twenty-six".