16661167156210 has 16 divisors (see below), whose sum is σ = 30071817783936. Its totient is φ = 6646307550768.

The previous prime is 16661167156177. The next prime is 16661167156213. The reversal of 16661167156210 is 1265176116661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16661167156213) 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, 2269910112 + ... + 2269917451.

It is an arithmetic number, because the mean of its divisors is an integer number (1879488611496).

Almost surely, 2^{16661167156210} is an apocalyptic number.

16661167156210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16661167156210 is a deficient number, since it is larger than the sum of its proper divisors (13410650627726).

16661167156210 is a wasteful number, since it uses less digits than its factorization.

16661167156210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539827937.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 16661167156210 in words is "sixteen trillion, six hundred sixty-one billion, one hundred sixty-seven million, one hundred fifty-six thousand, two hundred ten".