2135855354317 has 2 divisors, whose sum is σ = 2135855354318. Its totient is φ = 2135855354316.

The previous prime is 2135855354153. The next prime is 2135855354333. The reversal of 2135855354317 is 7134535585312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1587383287396 + 548472066921 = 1259914^2 + 740589^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135855354317 - 2¹⁵ = 2135855321549 is a prime.

It is a super-2 number, since 2×2135855354317² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135855354377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067927677158 + 1067927677159.

It is an arithmetic number, because the mean of its divisors is an integer number (1067927677159).

Almost surely, 2^{2135855354317} is an apocalyptic number.

It is an amenable number.

2135855354317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135855354317 is an equidigital number, since it uses as much as digits as its factorization.

2135855354317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560000, while the sum is 52.

The spelling of 2135855354317 in words is "two trillion, one hundred thirty-five billion, eight hundred fifty-five million, three hundred fifty-four thousand, three hundred seventeen".