135239320783 has 4 divisors (see below), whose sum is σ = 154559223760. Its totient is φ = 115919417808.

The previous prime is 135239320759. The next prime is 135239320813. The reversal of 135239320783 is 387023932531.

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-135239320783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135239320583) 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, 9659951478 + ... + 9659951491.

It is an arithmetic number, because the mean of its divisors is an integer number (38639805940).

Almost surely, 2^135239320783 is an apocalyptic number.

135239320783 is a deficient number, since it is larger than the sum of its proper divisors (19319902977).

135239320783 is an equidigital number, since it uses as much as digits as its factorization.

135239320783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19319902976.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 135239320783 in words is "one hundred thirty-five billion, two hundred thirty-nine million, three hundred twenty thousand, seven hundred eighty-three".