135143692508 has 24 divisors (see below), whose sum is σ = 261267444480. Its totient is φ = 60651367920.

The previous prime is 135143692469. The next prime is 135143692517. The reversal of 135143692508 is 805296341531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19436066 + ... + 19443017.

It is an arithmetic number, because the mean of its divisors is an integer number (10886143520).

Almost surely, 2^135143692508 is an apocalyptic number.

It is an amenable number.

135143692508 is a deficient number, since it is larger than the sum of its proper divisors (126123751972).

135143692508 is a wasteful number, since it uses less digits than its factorization.

135143692508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38879177 (or 38879175 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 135143692508 in words is "one hundred thirty-five billion, one hundred forty-three million, six hundred ninety-two thousand, five hundred eight".