135085697947 has 2 divisors, whose sum is σ = 135085697948. Its totient is φ = 135085697946.

The previous prime is 135085697941. The next prime is 135085697969. The reversal of 135085697947 is 749796580531.

It is a weak prime.

It is an emirp because it is prime and its reverse (749796580531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135085697947 - 2¹⁵ = 135085665179 is a prime.

It is not a weakly prime, because it can be changed into another prime (135085697941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67542848973 + 67542848974.

It is an arithmetic number, because the mean of its divisors is an integer number (67542848974).

Almost surely, 2^135085697947 is an apocalyptic number.

135085697947 is a deficient number, since it is larger than the sum of its proper divisors (1).

135085697947 is an equidigital number, since it uses as much as digits as its factorization.

135085697947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 135085697947 in words is "one hundred thirty-five billion, eighty-five million, six hundred ninety-seven thousand, nine hundred forty-seven".