16493396537 has 2 divisors, whose sum is σ = 16493396538. Its totient is φ = 16493396536.

The previous prime is 16493396503. The next prime is 16493396539. The reversal of 16493396537 is 73569339461.

16493396537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13091707561 + 3401688976 = 114419^2 + 58324^2 .

It is an emirp because it is prime and its reverse (73569339461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16493396537 - 2⁶ = 16493396473 is a prime.

Together with 16493396539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16493396539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8246698268 + 8246698269.

It is an arithmetic number, because the mean of its divisors is an integer number (8246698269).

Almost surely, 2^16493396537 is an apocalyptic number.

It is an amenable number.

16493396537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16493396537 is an equidigital number, since it uses as much as digits as its factorization.

16493396537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 56.

The spelling of 16493396537 in words is "sixteen billion, four hundred ninety-three million, three hundred ninety-six thousand, five hundred thirty-seven".