16105524109 has 2 divisors, whose sum is σ = 16105524110. Its totient is φ = 16105524108.

The previous prime is 16105524067. The next prime is 16105524131. The reversal of 16105524109 is 90142550161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15675791209 + 429732900 = 125203^2 + 20730^2 .

It is a cyclic number.

It is not a de Polignac number, because 16105524109 - 2¹¹ = 16105522061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16100524109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8052762054 + 8052762055.

It is an arithmetic number, because the mean of its divisors is an integer number (8052762055).

Almost surely, 2^16105524109 is an apocalyptic number.

It is an amenable number.

16105524109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105524109 is an equidigital number, since it uses as much as digits as its factorization.

16105524109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 16105524109 in words is "sixteen billion, one hundred five million, five hundred twenty-four thousand, one hundred nine".