16661165160 has 32 divisors (see below), whose sum is σ = 49983495840. Its totient is φ = 4442977344.

The previous prime is 16661165159. The next prime is 16661165161. The reversal of 16661165160 is 6156116661.

It is an interprime number because it is at equal distance from previous prime (16661165159) and next prime (16661165161).

It is not an unprimeable number, because it can be changed into a prime (16661165161) 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, 69421402 + ... + 69421641.

It is an arithmetic number, because the mean of its divisors is an integer number (1561984245).

Almost surely, 2^16661165160 is an apocalyptic number.

16661165160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16661165160 is an abundant number, since it is smaller than the sum of its proper divisors (33322330680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16661165160 is a wasteful number, since it uses less digits than its factorization.

16661165160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138843057 (or 138843053 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 16661165160 in words is "sixteen billion, six hundred sixty-one million, one hundred sixty-five thousand, one hundred sixty".