802208136561 has 16 divisors (see below), whose sum is σ = 1152070733184. Its totient is φ = 493588491264.

The previous prime is 802208136539. The next prime is 802208136571. The reversal of 802208136561 is 165631802208.

It is not a de Polignac number, because 802208136561 - 2⁵ = 802208136529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (802208136571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375821 + ... + 1870106.

It is an arithmetic number, because the mean of its divisors is an integer number (72004420824).

Almost surely, 2^802208136561 is an apocalyptic number.

It is an amenable number.

802208136561 is a deficient number, since it is larger than the sum of its proper divisors (349862596623).

802208136561 is a wasteful number, since it uses less digits than its factorization.

802208136561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252280.

The product of its (nonzero) digits is 138240, while the sum is 42.

Adding to 802208136561 its reverse (165631802208), we get a palindrome (967839938769).

The spelling of 802208136561 in words is "eight hundred two billion, two hundred eight million, one hundred thirty-six thousand, five hundred sixty-one".