2135511243434 has 4 divisors (see below), whose sum is σ = 3203266865154. Its totient is φ = 1067755621716.

The previous prime is 2135511243433. The next prime is 2135511243451. The reversal of 2135511243434 is 4343421155312.

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

It can be written as a sum of positive squares in only one way, i.e., 2128812312025 + 6698931409 = 1459045^2 + 81847^2 .

It is a super-2 number, since 2×2135511243434² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2135511243433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533877810857 + ... + 533877810860.

Almost surely, 2^{2135511243434} is an apocalyptic number.

2135511243434 is a deficient number, since it is larger than the sum of its proper divisors (1067755621720).

2135511243434 is a wasteful number, since it uses less digits than its factorization.

2135511243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067755621719.

The product of its digits is 172800, while the sum is 38.

Adding to 2135511243434 its reverse (4343421155312), we get a palindrome (6478932398746).

The spelling of 2135511243434 in words is "two trillion, one hundred thirty-five billion, five hundred eleven million, two hundred forty-three thousand, four hundred thirty-four".