135342453989 has 2 divisors, whose sum is σ = 135342453990. Its totient is φ = 135342453988.

The previous prime is 135342453977. The next prime is 135342454043. The reversal of 135342453989 is 989354243531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105225628225 + 30116825764 = 324385^2 + 173542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135342453989 is a prime.

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 (135342453919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67671226994 + 67671226995.

It is an arithmetic number, because the mean of its divisors is an integer number (67671226995).

Almost surely, 2^135342453989 is an apocalyptic number.

It is an amenable number.

135342453989 is a deficient number, since it is larger than the sum of its proper divisors (1).

135342453989 is an equidigital number, since it uses as much as digits as its factorization.

135342453989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13996800, while the sum is 56.

The spelling of 135342453989 in words is "one hundred thirty-five billion, three hundred forty-two million, four hundred fifty-three thousand, nine hundred eighty-nine".