16566122117120 has 48 divisors (see below), whose sum is σ = 39748986393480. Its totient is φ = 6626448842752.

The previous prime is 16566122117101. The next prime is 16566122117123. The reversal of 16566122117120 is 2171122166561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16566122117123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808882442 + ... + 808902921.

Almost surely, 2^{16566122117120} is an apocalyptic number.

16566122117120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16566122117120 is an abundant number, since it is smaller than the sum of its proper divisors (23182864276360).

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

16566122117120 is an equidigital number, since it uses as much as digits as its factorization.

16566122117120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617785390 (or 1617785370 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 16566122117120 in words is "sixteen trillion, five hundred sixty-six billion, one hundred twenty-two million, one hundred seventeen thousand, one hundred twenty".