16625312666 has 8 divisors (see below), whose sum is σ = 24939762624. Its totient is φ = 8312058460.

The previous prime is 16625312597. The next prime is 16625312681. The reversal of 16625312666 is 66621352661.

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

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, 263330 + ... + 320301.

It is an arithmetic number, because the mean of its divisors is an integer number (3117470328).

Almost surely, 2^16625312666 is an apocalyptic number.

16625312666 is a deficient number, since it is larger than the sum of its proper divisors (8314449958).

16625312666 is a wasteful number, since it uses less digits than its factorization.

16625312666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597876.

The product of its digits is 466560, while the sum is 44.

The spelling of 16625312666 in words is "sixteen billion, six hundred twenty-five million, three hundred twelve thousand, six hundred sixty-six".