2064399205135 has 4 divisors (see below), whose sum is σ = 2477279046168. Its totient is φ = 1651519364104.

The previous prime is 2064399205097. The next prime is 2064399205151. The reversal of 2064399205135 is 5315029934602.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2064399205135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206439920509 + ... + 206439920518.

It is an arithmetic number, because the mean of its divisors is an integer number (619319761542).

Almost surely, 2^{2064399205135} is an apocalyptic number.

2064399205135 is a deficient number, since it is larger than the sum of its proper divisors (412879841033).

2064399205135 is an equidigital number, since it uses as much as digits as its factorization.

2064399205135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412879841032.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 2064399205135 in words is "two trillion, sixty-four billion, three hundred ninety-nine million, two hundred five thousand, one hundred thirty-five".