136478471 has 2 divisors, whose sum is σ = 136478472. Its totient is φ = 136478470.

The previous prime is 136478449. The next prime is 136478491. The reversal of 136478471 is 174874631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136478471 - 2²⁶ = 69369607 is a prime.

It is a super-3 number, since 3×136478471³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136478491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68239235 + 68239236.

It is an arithmetic number, because the mean of its divisors is an integer number (68239236).

Almost surely, 2^136478471 is an apocalyptic number.

136478471 is a deficient number, since it is larger than the sum of its proper divisors (1).

136478471 is an equidigital number, since it uses as much as digits as its factorization.

136478471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The square root of 136478471 is about 11682.4000530713. The cubic root of 136478471 is about 514.8586924970.

The spelling of 136478471 in words is "one hundred thirty-six million, four hundred seventy-eight thousand, four hundred seventy-one".