136378177 has 8 divisors (see below), whose sum is σ = 150451560. Its totient is φ = 122816640.

The previous prime is 136378153. The next prime is 136378279. The reversal of 136378177 is 771873631.

It can be written as a sum of positive squares in 4 ways, for example, as 678976 + 135699201 = 824^2 + 11649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136378177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136378117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127402 + ... + 128467.

It is an arithmetic number, because the mean of its divisors is an integer number (18806445).

Almost surely, 2^136378177 is an apocalyptic number.

It is an amenable number.

136378177 is a deficient number, since it is larger than the sum of its proper divisors (14073383).

136378177 is a wasteful number, since it uses less digits than its factorization.

136378177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255923.

The product of its digits is 148176, while the sum is 43.

The square root of 136378177 is about 11678.1067386799. The cubic root of 136378177 is about 514.7325434388.

The spelling of 136378177 in words is "one hundred thirty-six million, three hundred seventy-eight thousand, one hundred seventy-seven".