135942639616 has 117 divisors (see below), whose sum is σ = 316620819711. Its totient is φ = 58190340096.

The previous prime is 135942639587. The next prime is 135942639631. The reversal of 135942639616 is 616936249531.

The square root of 135942639616 is 368704.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 165178981 + ... + 165179803.

Almost surely, 2^135942639616 is an apocalyptic number.

135942639616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

135942639616 is the 368704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135942639616

135942639616 is an abundant number, since it is smaller than the sum of its proper divisors (180678180095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135942639616 is an frugal number, since it uses more digits than its factorization.

135942639616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684 (or 832 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 55.

The spelling of 135942639616 in words is "one hundred thirty-five billion, nine hundred forty-two million, six hundred thirty-nine thousand, six hundred sixteen".