135304155220987 has 2 divisors, whose sum is σ = 135304155220988. Its totient is φ = 135304155220986.

The previous prime is 135304155220957. The next prime is 135304155221149. The reversal of 135304155220987 is 789022551403531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135304155220987 is a prime.

It is not a weakly prime, because it can be changed into another prime (135304155220957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67652077610493 + 67652077610494.

It is an arithmetic number, because the mean of its divisors is an integer number (67652077610494).

Almost surely, 2^{135304155220987} is an apocalyptic number.

135304155220987 is a deficient number, since it is larger than the sum of its proper divisors (1).

135304155220987 is an equidigital number, since it uses as much as digits as its factorization.

135304155220987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 135304155220987 in words is "one hundred thirty-five trillion, three hundred four billion, one hundred fifty-five million, two hundred twenty thousand, nine hundred eighty-seven".