135078761 has 2 divisors, whose sum is σ = 135078762. Its totient is φ = 135078760.

The previous prime is 135078751. The next prime is 135078791. The reversal of 135078761 is 167870531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 1907161 = 11540^2 + 1381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135078761 is a prime.

It is a Chen prime.

It is equal to p_7649705 and since 135078761 and 7649705 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (135078751) 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 as a sum of consecutive naturals, namely, 67539380 + 67539381.

It is an arithmetic number, because the mean of its divisors is an integer number (67539381).

Almost surely, 2^135078761 is an apocalyptic number.

It is an amenable number.

135078761 is a deficient number, since it is larger than the sum of its proper divisors (1).

135078761 is an equidigital number, since it uses as much as digits as its factorization.

135078761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 135078761 is about 11622.3388782121. The cubic root of 135078761 is about 513.0925271383.

The spelling of 135078761 in words is "one hundred thirty-five million, seventy-eight thousand, seven hundred sixty-one".