136504775617487 has 2 divisors, whose sum is σ = 136504775617488. Its totient is φ = 136504775617486.

The previous prime is 136504775617393. The next prime is 136504775617517. The reversal of 136504775617487 is 784716577405631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136504775617487 - 2²⁴ = 136504758840271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136504775617487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136504775637487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68252387808743 + 68252387808744.

It is an arithmetic number, because the mean of its divisors is an integer number (68252387808744).

Almost surely, 2^{136504775617487} is an apocalyptic number.

136504775617487 is a deficient number, since it is larger than the sum of its proper divisors (1).

136504775617487 is an equidigital number, since it uses as much as digits as its factorization.

136504775617487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829785600, while the sum is 71.

The spelling of 136504775617487 in words is "one hundred thirty-six trillion, five hundred four billion, seven hundred seventy-five million, six hundred seventeen thousand, four hundred eighty-seven".