16599536441 has 2 divisors, whose sum is σ = 16599536442. Its totient is φ = 16599536440.

The previous prime is 16599536419. The next prime is 16599536483. The reversal of 16599536441 is 14463599561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13978096441 + 2621440000 = 118229^2 + 51200^2 .

It is a cyclic number.

It is not a de Polignac number, because 16599536441 - 2¹⁸ = 16599274297 is a prime.

It is a super-2 number, since 2×16599536441² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16599536411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8299768220 + 8299768221.

It is an arithmetic number, because the mean of its divisors is an integer number (8299768221).

Almost surely, 2^16599536441 is an apocalyptic number.

It is an amenable number.

16599536441 is a deficient number, since it is larger than the sum of its proper divisors (1).

16599536441 is an equidigital number, since it uses as much as digits as its factorization.

16599536441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 53.

The spelling of 16599536441 in words is "sixteen billion, five hundred ninety-nine million, five hundred thirty-six thousand, four hundred forty-one".