16401165337 has 2 divisors, whose sum is σ = 16401165338. Its totient is φ = 16401165336.

The previous prime is 16401165331. The next prime is 16401165401. The reversal of 16401165337 is 73356110461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10803731481 + 5597433856 = 103941^2 + 74816^2 .

It is a cyclic number.

It is not a de Polignac number, because 16401165337 - 2³ = 16401165329 is a prime.

It is a super-2 number, since 2×16401165337² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16401165296 and 16401165305.

It is not a weakly prime, because it can be changed into another prime (16401165331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8200582668 + 8200582669.

It is an arithmetic number, because the mean of its divisors is an integer number (8200582669).

Almost surely, 2^16401165337 is an apocalyptic number.

It is an amenable number.

16401165337 is a deficient number, since it is larger than the sum of its proper divisors (1).

16401165337 is an equidigital number, since it uses as much as digits as its factorization.

16401165337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

Adding to 16401165337 its reverse (73356110461), we get a palindrome (89757275798).

The spelling of 16401165337 in words is "sixteen billion, four hundred one million, one hundred sixty-five thousand, three hundred thirty-seven".