135653871 has 16 divisors (see below), whose sum is σ = 188788320. Its totient is φ = 86561280.

The previous prime is 135653867. The next prime is 135653893. The reversal of 135653871 is 178356531.

It is a happy number.

It is not a de Polignac number, because 135653871 - 2² = 135653867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135653801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3886 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (11799270).

Almost surely, 2^135653871 is an apocalyptic number.

135653871 is a deficient number, since it is larger than the sum of its proper divisors (53134449).

135653871 is a wasteful number, since it uses less digits than its factorization.

135653871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20906.

The product of its digits is 75600, while the sum is 39.

The square root of 135653871 is about 11647.0541769153. The cubic root of 135653871 is about 513.8196753732.

The spelling of 135653871 in words is "one hundred thirty-five million, six hundred fifty-three thousand, eight hundred seventy-one".