16651163165 has 16 divisors (see below), whose sum is σ = 24592487808. Its totient is φ = 10539637056.

The previous prime is 16651163159. The next prime is 16651163183. The reversal of 16651163165 is 56136115661.

It is not a de Polignac number, because 16651163165 - 2¹² = 16651159069 is a prime.

It is a super-2 number, since 2×16651163165² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18297527 + ... + 18298436.

It is an arithmetic number, because the mean of its divisors is an integer number (1537030488).

Almost surely, 2^16651163165 is an apocalyptic number.

It is an amenable number.

16651163165 is a deficient number, since it is larger than the sum of its proper divisors (7941324643).

16651163165 is a wasteful number, since it uses less digits than its factorization.

16651163165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36595988.

The product of its digits is 97200, while the sum is 41.

The spelling of 16651163165 in words is "sixteen billion, six hundred fifty-one million, one hundred sixty-three thousand, one hundred sixty-five".