8135129696 has 24 divisors (see below), whose sum is σ = 16054287480. Its totient is φ = 4057850368.

The previous prime is 8135129669. The next prime is 8135129701. The reversal of 8135129696 is 6969215318.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289961 + ... + 316776.

It is an arithmetic number, because the mean of its divisors is an integer number (668928645).

Almost surely, 2^8135129696 is an apocalyptic number.

It is an amenable number.

8135129696 is a deficient number, since it is larger than the sum of its proper divisors (7919157784).

8135129696 is a wasteful number, since it uses less digits than its factorization.

8135129696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607166 (or 607158 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 8135129696 is about 90194.9538278057. The cubic root of 8135129696 is about 2011.1979934569.

The spelling of 8135129696 in words is "eight billion, one hundred thirty-five million, one hundred twenty-nine thousand, six hundred ninety-six".