135222406643 has 4 divisors (see below), whose sum is σ = 138877066320. Its totient is φ = 131567746968.

The previous prime is 135222406637. The next prime is 135222406651. The reversal of 135222406643 is 346604222531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346604222531 = 7 ⋅49514888933.

It is a cyclic number.

It is not a de Polignac number, because 135222406643 - 2²⁶ = 135155297779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135222406597 and 135222406606.

It is not an unprimeable number, because it can be changed into a prime (135222406663) 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, 1827329783 + ... + 1827329856.

It is an arithmetic number, because the mean of its divisors is an integer number (34719266580).

Almost surely, 2^135222406643 is an apocalyptic number.

135222406643 is a deficient number, since it is larger than the sum of its proper divisors (3654659677).

135222406643 is an equidigital number, since it uses as much as digits as its factorization.

135222406643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654659676.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 135222406643 in words is "one hundred thirty-five billion, two hundred twenty-two million, four hundred six thousand, six hundred forty-three".