916808684669 has 16 divisors (see below), whose sum is σ = 950613313536. Its totient is φ = 883276876800.

The previous prime is 916808684599. The next prime is 916808684689. The reversal of 916808684669 is 966486808619.

It is a cyclic number.

It is not a de Polignac number, because 916808684669 - 2¹² = 916808680573 is a prime.

It is a super-2 number, since 2×916808684669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916808684689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6494699 + ... + 6634359.

It is an arithmetic number, because the mean of its divisors is an integer number (59413332096).

Almost surely, 2^916808684669 is an apocalyptic number.

It is an amenable number.

916808684669 is a deficient number, since it is larger than the sum of its proper divisors (33804628867).

916808684669 is a wasteful number, since it uses less digits than its factorization.

916808684669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140636.

The product of its (nonzero) digits is 214990848, while the sum is 71.

The spelling of 916808684669 in words is "nine hundred sixteen billion, eight hundred eight million, six hundred eighty-four thousand, six hundred sixty-nine".