288397687121 has 2 divisors, whose sum is σ = 288397687122. Its totient is φ = 288397687120.

The previous prime is 288397687117. The next prime is 288397687153. The reversal of 288397687121 is 121786793882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264236093521 + 24161593600 = 514039^2 + 155440^2 .

It is a cyclic number.

It is not a de Polignac number, because 288397687121 - 2² = 288397687117 is a prime.

It is not a weakly prime, because it can be changed into another prime (288397687181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144198843560 + 144198843561.

It is an arithmetic number, because the mean of its divisors is an integer number (144198843561).

Almost surely, 2^288397687121 is an apocalyptic number.

It is an amenable number.

288397687121 is a deficient number, since it is larger than the sum of its proper divisors (1).

288397687121 is an equidigital number, since it uses as much as digits as its factorization.

288397687121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 62.

The spelling of 288397687121 in words is "two hundred eighty-eight billion, three hundred ninety-seven million, six hundred eighty-seven thousand, one hundred twenty-one".