16505510015166 has 16 divisors (see below), whose sum is σ = 33201835177104. Its totient is φ = 5470034147264.

The previous prime is 16505510015119. The next prime is 16505510015167. The reversal of 16505510015166 is 66151001550561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505510015167) 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, 7950629991 + ... + 7950632066.

It is an arithmetic number, because the mean of its divisors is an integer number (2075114698569).

Almost surely, 2^{16505510015166} is an apocalyptic number.

16505510015166 is an abundant number, since it is smaller than the sum of its proper divisors (16696325161938).

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

16505510015166 is a wasteful number, since it uses less digits than its factorization.

16505510015166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901262235.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 16505510015166 in words is "sixteen trillion, five hundred five billion, five hundred ten million, fifteen thousand, one hundred sixty-six".