135748663378 has 8 divisors (see below), whose sum is σ = 209126319372. Its totient is φ = 66039890256.

The previous prime is 135748663373. The next prime is 135748663387. The reversal of 135748663378 is 873366847531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 134232106129 + 1516557249 = 366377^2 + 38943^2 .

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

It is not an unprimeable number, because it can be changed into a prime (135748663373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917220625 + ... + 917220772.

Almost surely, 2^135748663378 is an apocalyptic number.

135748663378 is a deficient number, since it is larger than the sum of its proper divisors (73377655994).

135748663378 is a wasteful number, since it uses less digits than its factorization.

135748663378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834441436.

The product of its digits is 60963840, while the sum is 61.

It can be divided in two parts, 1357486 and 63378, that added together give a square (1420864 = 1192²).

The spelling of 135748663378 in words is "one hundred thirty-five billion, seven hundred forty-eight million, six hundred sixty-three thousand, three hundred seventy-eight".