135139871764 has 6 divisors (see below), whose sum is σ = 236494775594. Its totient is φ = 67569935880.

The previous prime is 135139871749. The next prime is 135139871807. The reversal of 135139871764 is 467178931531.

It can be written as a sum of positive squares in only one way, i.e., 135025381764 + 114490000 = 367458^2 + 10700^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16892483967 + ... + 16892483974.

Almost surely, 2^135139871764 is an apocalyptic number.

It is an amenable number.

135139871764 is a deficient number, since it is larger than the sum of its proper divisors (101354903830).

135139871764 is a wasteful number, since it uses less digits than its factorization.

135139871764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33784967945 (or 33784967943 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The spelling of 135139871764 in words is "one hundred thirty-five billion, one hundred thirty-nine million, eight hundred seventy-one thousand, seven hundred sixty-four".