16420643133 has 16 divisors (see below), whose sum is σ = 22153022976. Its totient is φ = 10818397440.

The previous prime is 16420643123. The next prime is 16420643137. The reversal of 16420643133 is 33134602461.

It is not a de Polignac number, because 16420643133 - 2⁸ = 16420642877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16420643094 and 16420643103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420643137) 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, 2073 + ... + 181233.

It is an arithmetic number, because the mean of its divisors is an integer number (1384563936).

Almost surely, 2^16420643133 is an apocalyptic number.

It is an amenable number.

16420643133 is a deficient number, since it is larger than the sum of its proper divisors (5732379843).

16420643133 is a wasteful number, since it uses less digits than its factorization.

16420643133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179524.

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 16420643133 in words is "sixteen billion, four hundred twenty million, six hundred forty-three thousand, one hundred thirty-three".