16433291811081 has 16 divisors (see below), whose sum is σ = 22216251052800. Its totient is φ = 10803278224128.

The previous prime is 16433291811019. The next prime is 16433291811161. The reversal of 16433291811081 is 18011819233461.

It is not a de Polignac number, because 16433291811081 - 2¹⁴ = 16433291794697 is a prime.

It is a super-3 number, since 3×16433291811081³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 16433291811081.

It is not an unprimeable number, because it can be changed into a prime (16433291811581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43310976 + ... + 43688753.

It is an arithmetic number, because the mean of its divisors is an integer number (1388515690800).

Almost surely, 2^{16433291811081} is an apocalyptic number.

It is an amenable number.

16433291811081 is a deficient number, since it is larger than the sum of its proper divisors (5782959241719).

16433291811081 is an equidigital number, since it uses as much as digits as its factorization.

16433291811081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87000608.

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 16433291811081 in words is "sixteen trillion, four hundred thirty-three billion, two hundred ninety-one million, eight hundred eleven thousand, eighty-one".