135411321989 has 2 divisors, whose sum is σ = 135411321990. Its totient is φ = 135411321988.

The previous prime is 135411321967. The next prime is 135411322003. The reversal of 135411321989 is 989123114531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95883122500 + 39528199489 = 309650^2 + 198817^2 .

It is a cyclic number.

It is not a de Polignac number, because 135411321989 - 2²⁸ = 135142886533 is a prime.

It is a super-2 number, since 2×135411321989² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135411321919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67705660994 + 67705660995.

It is an arithmetic number, because the mean of its divisors is an integer number (67705660995).

Almost surely, 2^135411321989 is an apocalyptic number.

It is an amenable number.

135411321989 is a deficient number, since it is larger than the sum of its proper divisors (1).

135411321989 is an equidigital number, since it uses as much as digits as its factorization.

135411321989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 47.

The spelling of 135411321989 in words is "one hundred thirty-five billion, four hundred eleven million, three hundred twenty-one thousand, nine hundred eighty-nine".