135752012778 has 16 divisors (see below), whose sum is σ = 271526530176. Its totient is φ = 45246920160.

The previous prime is 135752012771. The next prime is 135752012819. The reversal of 135752012778 is 877210257531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (135752012771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858763 + ... + 1004478.

It is an arithmetic number, because the mean of its divisors is an integer number (16970408136).

Almost surely, 2^135752012778 is an apocalyptic number.

135752012778 is an abundant number, since it is smaller than the sum of its proper divisors (135774517398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135752012778 is a wasteful number, since it uses less digits than its factorization.

135752012778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875389.

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 135752012778 in words is "one hundred thirty-five billion, seven hundred fifty-two million, twelve thousand, seven hundred seventy-eight".