135803839643 has 4 divisors (see below), whose sum is σ = 135807875928. Its totient is φ = 135799803360.

The previous prime is 135803839631. The next prime is 135803839649. The reversal of 135803839643 is 346938308531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346938308531 = 877 ⋅395596703.

It is a cyclic number.

It is not a de Polignac number, because 135803839643 - 2¹⁸ = 135803577499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135803839649) 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, 1967246 + ... + 2035107.

It is an arithmetic number, because the mean of its divisors is an integer number (33951968982).

Almost surely, 2^135803839643 is an apocalyptic number.

135803839643 is a deficient number, since it is larger than the sum of its proper divisors (4036285).

135803839643 is an equidigital number, since it uses as much as digits as its factorization.

135803839643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036284.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 135803839643 in words is "one hundred thirty-five billion, eight hundred three million, eight hundred thirty-nine thousand, six hundred forty-three".