135678137047 has 4 divisors (see below), whose sum is σ = 135860746320. Its totient is φ = 135495527776.

The previous prime is 135678137029. The next prime is 135678137053. The reversal of 135678137047 is 740731876531.

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-135678137047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135678136985 and 135678137003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135678147047) 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, 91303522 + ... + 91305007.

It is an arithmetic number, because the mean of its divisors is an integer number (33965186580).

Almost surely, 2^135678137047 is an apocalyptic number.

135678137047 is a deficient number, since it is larger than the sum of its proper divisors (182609273).

135678137047 is an equidigital number, since it uses as much as digits as its factorization.

135678137047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182609272.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 135678137047 in words is "one hundred thirty-five billion, six hundred seventy-eight million, one hundred thirty-seven thousand, forty-seven".