135687281563276 has 24 divisors (see below), whose sum is σ = 245644652045520. Its totient is φ = 65503169239872.

The previous prime is 135687281563237. The next prime is 135687281563277. The reversal of 135687281563276 is 672365182786531.

It is a super-2 number, since 2×135687281563276² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135687281563277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1852995 + ... + 16577338.

It is an arithmetic number, because the mean of its divisors is an integer number (10235193835230).

Almost surely, 2^{135687281563276} is an apocalyptic number.

It is an amenable number.

135687281563276 is a deficient number, since it is larger than the sum of its proper divisors (109957370482244).

135687281563276 is a wasteful number, since it uses less digits than its factorization.

135687281563276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493833 (or 18493831 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 70.

The spelling of 135687281563276 in words is "one hundred thirty-five trillion, six hundred eighty-seven billion, two hundred eighty-one million, five hundred sixty-three thousand, two hundred seventy-six".