16166511016601 has 8 divisors (see below), whose sum is σ = 17899420610784. Its totient is φ = 14477472551520.

The previous prime is 16166511016583. The next prime is 16166511016637. The reversal of 16166511016601 is 10661011566161.

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

It is a de Polignac number, because none of the positive numbers 2^k-16166511016601 is a prime.

It is a super-3 number, since 3×16166511016601³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16166511046601) 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, 10967781500 + ... + 10967782973.

It is an arithmetic number, because the mean of its divisors is an integer number (2237427576348).

Almost surely, 2^{16166511016601} is an apocalyptic number.

16166511016601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16166511016601 is a deficient number, since it is larger than the sum of its proper divisors (1732909594183).

16166511016601 is a wasteful number, since it uses less digits than its factorization.

16166511016601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21935564551.

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

The spelling of 16166511016601 in words is "sixteen trillion, one hundred sixty-six billion, five hundred eleven million, sixteen thousand, six hundred one".