16842666788 has 6 divisors (see below), whose sum is σ = 29474666886. Its totient is φ = 8421333392.

The previous prime is 16842666787. The next prime is 16842666821. The reversal of 16842666788 is 88766624861.

It can be written as a sum of positive squares in only one way, i.e., 16509166144 + 333500644 = 128488^2 + 18262^2 .

It is a super-3 number, since 3×16842666788³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16842666788.

It is not an unprimeable number, because it can be changed into a prime (16842666787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105333345 + ... + 2105333352.

It is an arithmetic number, because the mean of its divisors is an integer number (4912444481).

Almost surely, 2^16842666788 is an apocalyptic number.

It is an amenable number.

16842666788 is a deficient number, since it is larger than the sum of its proper divisors (12632000098).

16842666788 is a wasteful number, since it uses less digits than its factorization.

16842666788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210666701 (or 4210666699 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 62.

The spelling of 16842666788 in words is "sixteen billion, eight hundred forty-two million, six hundred sixty-six thousand, seven hundred eighty-eight".