136745959690513 has 4 divisors (see below), whose sum is σ = 136746826222900. Its totient is φ = 136745093158128.

The previous prime is 136745959690441. The next prime is 136745959690567. The reversal of 136745959690513 is 315096959547631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73879646236929 + 62866313453584 = 8595327^2 + 7928828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136745959690513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136745959699513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433029438 + ... + 433345111.

It is an arithmetic number, because the mean of its divisors is an integer number (34186706555725).

Almost surely, 2^{136745959690513} is an apocalyptic number.

It is an amenable number.

136745959690513 is a deficient number, since it is larger than the sum of its proper divisors (866532387).

136745959690513 is an equidigital number, since it uses as much as digits as its factorization.

136745959690513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866532386.

The product of its (nonzero) digits is 826686000, while the sum is 73.

The spelling of 136745959690513 in words is "one hundred thirty-six trillion, seven hundred forty-five billion, nine hundred fifty-nine million, six hundred ninety thousand, five hundred thirteen".