135639074866 has 16 divisors (see below), whose sum is σ = 207551844864. Its totient is φ = 66468703104.

The previous prime is 135639074719. The next prime is 135639074867. The reversal of 135639074866 is 668470936531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 135639074866.

It is not an unprimeable number, because it can be changed into a prime (135639074867) 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, 3374050 + ... + 3414013.

It is an arithmetic number, because the mean of its divisors is an integer number (12971990304).

Almost surely, 2^135639074866 is an apocalyptic number.

135639074866 is a deficient number, since it is larger than the sum of its proper divisors (71912769998).

135639074866 is a wasteful number, since it uses less digits than its factorization.

135639074866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788265.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 135639074866 in words is "one hundred thirty-five billion, six hundred thirty-nine million, seventy-four thousand, eight hundred sixty-six".