16790436109 has 2 divisors, whose sum is σ = 16790436110. Its totient is φ = 16790436108.

The previous prime is 16790436107. The next prime is 16790436151. The reversal of 16790436109 is 90163409761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13801080484 + 2989355625 = 117478^2 + 54675^2 .

It is a cyclic number.

It is not a de Polignac number, because 16790436109 - 2¹ = 16790436107 is a prime.

It is a super-2 number, since 2×16790436109² (a number of 21 digits) contains 22 as substring.

Together with 16790436107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16790436107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8395218054 + 8395218055.

It is an arithmetic number, because the mean of its divisors is an integer number (8395218055).

Almost surely, 2^16790436109 is an apocalyptic number.

It is an amenable number.

16790436109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16790436109 is an equidigital number, since it uses as much as digits as its factorization.

16790436109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 16790436109 in words is "sixteen billion, seven hundred ninety million, four hundred thirty-six thousand, one hundred nine".