135366167971 has 4 divisors (see below), whose sum is σ = 143328883752. Its totient is φ = 127403452192.

The previous prime is 135366167969. The next prime is 135366167977. The reversal of 135366167971 is 179761663531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179761663531 = 121921 ⋅1474411.

It is a cyclic number.

It is not a de Polignac number, because 135366167971 - 2¹ = 135366167969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135366167977) 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, 3981357865 + ... + 3981357898.

It is an arithmetic number, because the mean of its divisors is an integer number (35832220938).

Almost surely, 2^135366167971 is an apocalyptic number.

135366167971 is a deficient number, since it is larger than the sum of its proper divisors (7962715781).

135366167971 is an equidigital number, since it uses as much as digits as its factorization.

135366167971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962715780.

The product of its digits is 4286520, while the sum is 55.

The spelling of 135366167971 in words is "one hundred thirty-five billion, three hundred sixty-six million, one hundred sixty-seven thousand, nine hundred seventy-one".