16111204429 has 2 divisors, whose sum is σ = 16111204430. Its totient is φ = 16111204428.

The previous prime is 16111204423. The next prime is 16111204471. The reversal of 16111204429 is 92440211161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15985809225 + 125395204 = 126435^2 + 11198^2 .

It is a cyclic number.

It is not a de Polignac number, because 16111204429 - 2¹⁷ = 16111073357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16111204429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16111204423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055602214 + 8055602215.

It is an arithmetic number, because the mean of its divisors is an integer number (8055602215).

Almost surely, 2^16111204429 is an apocalyptic number.

It is an amenable number.

16111204429 is a deficient number, since it is larger than the sum of its proper divisors (1).

16111204429 is an equidigital number, since it uses as much as digits as its factorization.

16111204429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 16111204429 in words is "sixteen billion, one hundred eleven million, two hundred four thousand, four hundred twenty-nine".