16169705997 has 8 divisors (see below), whose sum is σ = 22142300256. Its totient is φ = 10488457872.

The previous prime is 16169705977. The next prime is 16169706013. The reversal of 16169705997 is 79950796161.

It is a happy number.

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

It is not a de Polignac number, because 16169705997 - 2³⁰ = 15095964173 is a prime.

It is a super-2 number, since 2×16169705997² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16169705997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16169705977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72836403 + ... + 72836624.

It is an arithmetic number, because the mean of its divisors is an integer number (2767787532).

Almost surely, 2^16169705997 is an apocalyptic number.

It is an amenable number.

16169705997 is a deficient number, since it is larger than the sum of its proper divisors (5972594259).

16169705997 is a wasteful number, since it uses less digits than its factorization.

16169705997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145673067.

The product of its (nonzero) digits is 6429780, while the sum is 60.

The spelling of 16169705997 in words is "sixteen billion, one hundred sixty-nine million, seven hundred five thousand, nine hundred ninety-seven".