16123025666 has 24 divisors (see below), whose sum is σ = 26792371200. Its totient is φ = 7270928280.

The previous prime is 16123025647. The next prime is 16123025671. The reversal of 16123025666 is 66652032161.

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, 231566 + ... + 293033.

It is an arithmetic number, because the mean of its divisors is an integer number (1116348800).

Almost surely, 2^16123025666 is an apocalyptic number.

16123025666 is a deficient number, since it is larger than the sum of its proper divisors (10669345534).

16123025666 is a wasteful number, since it uses less digits than its factorization.

16123025666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524750 (or 524739 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 16123025666 in words is "sixteen billion, one hundred twenty-three million, twenty-five thousand, six hundred sixty-six".