135771900778 has 16 divisors (see below), whose sum is σ = 211156152480. Its totient is φ = 65397085936.

The previous prime is 135771900773. The next prime is 135771900791. The reversal of 135771900778 is 877009177531.

It is not an unprimeable number, because it can be changed into a prime (135771900773) 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, 2616400 + ... + 2667787.

It is an arithmetic number, because the mean of its divisors is an integer number (13197259530).

Almost surely, 2^135771900778 is an apocalyptic number.

135771900778 is a deficient number, since it is larger than the sum of its proper divisors (75384251702).

135771900778 is a wasteful number, since it uses less digits than its factorization.

135771900778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284661.

The product of its (nonzero) digits is 2593080, while the sum is 55.

The spelling of 135771900778 in words is "one hundred thirty-five billion, seven hundred seventy-one million, nine hundred thousand, seven hundred seventy-eight".