136228665371 has 4 divisors (see below), whose sum is σ = 139396773912. Its totient is φ = 133060556832.

The previous prime is 136228665361. The next prime is 136228665389. The reversal of 136228665371 is 173566822631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173566822631 = 4517 ⋅38425243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136228665371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136228665301) 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, 1584054206 + ... + 1584054291.

It is an arithmetic number, because the mean of its divisors is an integer number (34849193478).

Almost surely, 2^136228665371 is an apocalyptic number.

136228665371 is a deficient number, since it is larger than the sum of its proper divisors (3168108541).

136228665371 is an equidigital number, since it uses as much as digits as its factorization.

136228665371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168108540.

The product of its digits is 2177280, while the sum is 50.

The spelling of 136228665371 in words is "one hundred thirty-six billion, two hundred twenty-eight million, six hundred sixty-five thousand, three hundred seventy-one".