16393696531 has 2 divisors, whose sum is σ = 16393696532. Its totient is φ = 16393696530.

The previous prime is 16393696507. The next prime is 16393696663. The reversal of 16393696531 is 13569639361.

It is a weak prime.

It is an emirp because it is prime and its reverse (13569639361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16393696531 - 2¹⁵ = 16393663763 is a prime.

It is a super-2 number, since 2×16393696531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16393696031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8196848265 + 8196848266.

It is an arithmetic number, because the mean of its divisors is an integer number (8196848266).

Almost surely, 2^16393696531 is an apocalyptic number.

16393696531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16393696531 is an equidigital number, since it uses as much as digits as its factorization.

16393696531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2361960, while the sum is 52.

The spelling of 16393696531 in words is "sixteen billion, three hundred ninety-three million, six hundred ninety-six thousand, five hundred thirty-one".