2135661303043 has 4 divisors (see below), whose sum is σ = 2135668229968. Its totient is φ = 2135654376120.

The previous prime is 2135661303023. The next prime is 2135661303089. The reversal of 2135661303043 is 3403031665312.

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-2135661303043 is a prime.

It is a super-2 number, since 2×2135661303043² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2135661302993 and 2135661303011.

It is not an unprimeable number, because it can be changed into a prime (2135661303023) 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, 2978343 + ... + 3625168.

It is an arithmetic number, because the mean of its divisors is an integer number (533917057492).

Almost surely, 2^{2135661303043} is an apocalyptic number.

2135661303043 is a deficient number, since it is larger than the sum of its proper divisors (6926925).

2135661303043 is an equidigital number, since it uses as much as digits as its factorization.

2135661303043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926924.

The product of its (nonzero) digits is 116640, while the sum is 37.

Adding to 2135661303043 its reverse (3403031665312), we get a palindrome (5538692968355).

The spelling of 2135661303043 in words is "two trillion, one hundred thirty-five billion, six hundred sixty-one million, three hundred three thousand, forty-three".