16065332477 has 2 divisors, whose sum is σ = 16065332478. Its totient is φ = 16065332476.

The previous prime is 16065332471. The next prime is 16065332531. The reversal of 16065332477 is 77423356061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15240149401 + 825183076 = 123451^2 + 28726^2 .

It is a cyclic number.

It is not a de Polignac number, because 16065332477 - 2²² = 16061138173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16065332471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8032666238 + 8032666239.

It is an arithmetic number, because the mean of its divisors is an integer number (8032666239).

Almost surely, 2^16065332477 is an apocalyptic number.

It is an amenable number.

16065332477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16065332477 is an equidigital number, since it uses as much as digits as its factorization.

16065332477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 16065332477 in words is "sixteen billion, sixty-five million, three hundred thirty-two thousand, four hundred seventy-seven".