135680224969 has 2 divisors, whose sum is σ = 135680224970. Its totient is φ = 135680224968.

The previous prime is 135680224957. The next prime is 135680224993. The reversal of 135680224969 is 969422086531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122244633225 + 13435591744 = 349635^2 + 115912^2 .

It is a cyclic number.

It is not a de Polignac number, because 135680224969 - 2⁹ = 135680224457 is a prime.

It is a super-2 number, since 2×135680224969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135680624969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67840112484 + 67840112485.

It is an arithmetic number, because the mean of its divisors is an integer number (67840112485).

Almost surely, 2^135680224969 is an apocalyptic number.

It is an amenable number.

135680224969 is a deficient number, since it is larger than the sum of its proper divisors (1).

135680224969 is an equidigital number, since it uses as much as digits as its factorization.

135680224969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 135680224969 in words is "one hundred thirty-five billion, six hundred eighty million, two hundred twenty-four thousand, nine hundred sixty-nine".