16501166161061 has 8 divisors (see below), whose sum is σ = 16574884225920. Its totient is φ = 16427457094048.

The previous prime is 16501166161031. The next prime is 16501166161093. The reversal of 16501166161061 is 16016166110561.

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

It is a cyclic number.

It is not a de Polignac number, because 16501166161061 - 2³⁸ = 16226288254117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501166161021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440020 + ... + 5922498.

It is an arithmetic number, because the mean of its divisors is an integer number (2071860528240).

Almost surely, 2^{16501166161061} is an apocalyptic number.

It is an amenable number.

16501166161061 is a deficient number, since it is larger than the sum of its proper divisors (73718064859).

16501166161061 is a wasteful number, since it uses less digits than its factorization.

16501166161061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498923.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 16501166161061 in words is "sixteen trillion, five hundred one billion, one hundred sixty-six million, one hundred sixty-one thousand, sixty-one".