16399753387 has 2 divisors, whose sum is σ = 16399753388. Its totient is φ = 16399753386.

The previous prime is 16399753351. The next prime is 16399753397. The reversal of 16399753387 is 78335799361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16399753387 - 2¹¹ = 16399751339 is a prime.

It is a super-4 number, since 4×16399753387⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (16399753397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199876693 + 8199876694.

It is an arithmetic number, because the mean of its divisors is an integer number (8199876694).

Almost surely, 2^16399753387 is an apocalyptic number.

16399753387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16399753387 is an equidigital number, since it uses as much as digits as its factorization.

16399753387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25719120, while the sum is 61.

The spelling of 16399753387 in words is "sixteen billion, three hundred ninety-nine million, seven hundred fifty-three thousand, three hundred eighty-seven".