16235620369 has 2 divisors, whose sum is σ = 16235620370. Its totient is φ = 16235620368.

The previous prime is 16235620363. The next prime is 16235620393. The reversal of 16235620369 is 96302653261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16201980369 + 33640000 = 127287^2 + 5800^2 .

It is a cyclic number.

It is not a de Polignac number, because 16235620369 - 2²⁵ = 16202065937 is a prime.

It is a super-2 number, since 2×16235620369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16235620363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8117810184 + 8117810185.

It is an arithmetic number, because the mean of its divisors is an integer number (8117810185).

Almost surely, 2^16235620369 is an apocalyptic number.

It is an amenable number.

16235620369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16235620369 is an equidigital number, since it uses as much as digits as its factorization.

16235620369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 16235620369 in words is "sixteen billion, two hundred thirty-five million, six hundred twenty thousand, three hundred sixty-nine".