16634939133 has 4 divisors (see below), whose sum is σ = 22179918848. Its totient is φ = 11089959420.

The previous prime is 16634939117. The next prime is 16634939137. The reversal of 16634939133 is 33193943661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16634939133 - 2⁴ = 16634939117 is a prime.

It is a super-2 number, since 2×16634939133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16634939137) 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, 2772489853 + ... + 2772489858.

It is an arithmetic number, because the mean of its divisors is an integer number (5544979712).

Almost surely, 2^16634939133 is an apocalyptic number.

It is an amenable number.

16634939133 is a deficient number, since it is larger than the sum of its proper divisors (5544979715).

16634939133 is an equidigital number, since it uses as much as digits as its factorization.

16634939133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544979714.

The product of its digits is 944784, while the sum is 48.

It can be divided in two parts, 1663 and 4939133, that added together give a triangular number (4940796 = T₃₁₄₃).

The spelling of 16634939133 in words is "sixteen billion, six hundred thirty-four million, nine hundred thirty-nine thousand, one hundred thirty-three".