16320135397 has 2 divisors, whose sum is σ = 16320135398. Its totient is φ = 16320135396.

The previous prime is 16320135389. The next prime is 16320135449. The reversal of 16320135397 is 79353102361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16295543716 + 24591681 = 127654^2 + 4959^2 .

It is a cyclic number.

It is not a de Polignac number, because 16320135397 - 2³ = 16320135389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16320115397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160067698 + 8160067699.

It is an arithmetic number, because the mean of its divisors is an integer number (8160067699).

Almost surely, 2^16320135397 is an apocalyptic number.

It is an amenable number.

16320135397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320135397 is an equidigital number, since it uses as much as digits as its factorization.

16320135397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 40.

The spelling of 16320135397 in words is "sixteen billion, three hundred twenty million, one hundred thirty-five thousand, three hundred ninety-seven".