16056215552181 has 8 divisors (see below), whose sum is σ = 24466614174784. Its totient is φ = 9174980315520.

The previous prime is 16056215552161. The next prime is 16056215552183. The reversal of 16056215552181 is 18125551265061.

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

It is not a de Polignac number, because 16056215552181 - 2⁹ = 16056215551669 is a prime.

It is a super-2 number, since 2×16056215552181² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16056215552181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16056215552183) 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, 382290846460 + ... + 382290846501.

It is an arithmetic number, because the mean of its divisors is an integer number (3058326771848).

Almost surely, 2^{16056215552181} is an apocalyptic number.

It is an amenable number.

16056215552181 is a deficient number, since it is larger than the sum of its proper divisors (8410398622603).

16056215552181 is an equidigital number, since it uses as much as digits as its factorization.

16056215552181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764581692971.

The product of its (nonzero) digits is 720000, while the sum is 48.

The spelling of 16056215552181 in words is "sixteen trillion, fifty-six billion, two hundred fifteen million, five hundred fifty-two thousand, one hundred eighty-one".