135566943876 has 432 divisors, whose sum is σ = 439426041600. Its totient is φ = 34919216640.

The previous prime is 135566943817. The next prime is 135566943881. The reversal of 135566943876 is 678349665531.

135566943876 is a `hidden beast` number, since 1 + 3 + 556 + 6 + 9 + 4 + 3 + 8 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 278371305 + ... + 278371791.

Almost surely, 2^135566943876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135566943876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219713020800).

135566943876 is an abundant number, since it is smaller than the sum of its proper divisors (303859097724).

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

135566943876 is a wasteful number, since it uses less digits than its factorization.

135566943876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 772 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 135566943876 in words is "one hundred thirty-five billion, five hundred sixty-six million, nine hundred forty-three thousand, eight hundred seventy-six".