16166555560020 has 96 divisors (see below), whose sum is σ = 45324112393728. Its totient is φ = 4305583752192.

The previous prime is 16166555560013. The next prime is 16166555560027. The reversal of 16166555560020 is 2006555566161.

It is an interprime number because it is at equal distance from previous prime (16166555560013) and next prime (16166555560027).

It is a super-2 number, since 2×16166555560020² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166555560027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185061792 + ... + 185149128.

It is an arithmetic number, because the mean of its divisors is an integer number (472126170768).

Almost surely, 2^{16166555560020} is an apocalyptic number.

16166555560020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16166555560020 is an abundant number, since it is smaller than the sum of its proper divisors (29157556833708).

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

16166555560020 is a wasteful number, since it uses less digits than its factorization.

16166555560020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91249 (or 91247 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 48.

The spelling of 16166555560020 in words is "sixteen trillion, one hundred sixty-six billion, five hundred fifty-five million, five hundred sixty thousand, twenty".