135291656 has 32 divisors (see below), whose sum is σ = 260340480. Its totient is φ = 65889600.

The previous prime is 135291643. The next prime is 135291679. The reversal of 135291656 is 656192531.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50921 + ... + 53511.

It is an arithmetic number, because the mean of its divisors is an integer number (8135640).

Almost surely, 2^135291656 is an apocalyptic number.

It is an amenable number.

135291656 is a deficient number, since it is larger than the sum of its proper divisors (125048824).

135291656 is a wasteful number, since it uses less digits than its factorization.

135291656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2761 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 135291656 is about 11631.4941430583. The cubic root of 135291656 is about 513.3619440211.

The spelling of 135291656 in words is "one hundred thirty-five million, two hundred ninety-one thousand, six hundred fifty-six".