135924481447 has 4 divisors (see below), whose sum is σ = 136358745280. Its totient is φ = 135490217616.

The previous prime is 135924481367. The next prime is 135924481493. The reversal of 135924481447 is 744184429531.

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-135924481447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135924481394 and 135924481403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135924481747) 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, 217131447 + ... + 217132072.

It is an arithmetic number, because the mean of its divisors is an integer number (34089686320).

Almost surely, 2^135924481447 is an apocalyptic number.

135924481447 is a deficient number, since it is larger than the sum of its proper divisors (434263833).

135924481447 is an equidigital number, since it uses as much as digits as its factorization.

135924481447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434263832.

The product of its digits is 3870720, while the sum is 52.

The spelling of 135924481447 in words is "one hundred thirty-five billion, nine hundred twenty-four million, four hundred eighty-one thousand, four hundred forty-seven".