288690799081 has 2 divisors, whose sum is σ = 288690799082. Its totient is φ = 288690799080.

The previous prime is 288690799021. The next prime is 288690799091. The reversal of 288690799081 is 180997096882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283086779481 + 5604019600 = 532059^2 + 74860^2 .

It is a cyclic number.

It is not a de Polignac number, because 288690799081 - 2¹⁵ = 288690766313 is a prime.

It is a super-2 number, since 2×288690799081² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 288690798998 and 288690799016.

It is not a weakly prime, because it can be changed into another prime (288690799021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144345399540 + 144345399541.

It is an arithmetic number, because the mean of its divisors is an integer number (144345399541).

Almost surely, 2^288690799081 is an apocalyptic number.

It is an amenable number.

288690799081 is a deficient number, since it is larger than the sum of its proper divisors (1).

288690799081 is an equidigital number, since it uses as much as digits as its factorization.

288690799081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 67.

The spelling of 288690799081 in words is "two hundred eighty-eight billion, six hundred ninety million, seven hundred ninety-nine thousand, eighty-one".