135151821128 has 16 divisors (see below), whose sum is σ = 264427476480. Its totient is φ = 64637827408.

The previous prime is 135151821011. The next prime is 135151821137. The reversal of 135151821128 is 821128151531.

It is a junction number, because it is equal to n+sod(n) for n = 135151821091 and 135151821100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367260200 + ... + 367260567.

It is an arithmetic number, because the mean of its divisors is an integer number (16526717280).

Almost surely, 2^135151821128 is an apocalyptic number.

It is an amenable number.

135151821128 is a deficient number, since it is larger than the sum of its proper divisors (129275655352).

135151821128 is a wasteful number, since it uses less digits than its factorization.

135151821128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734520796 (or 734520792 counting only the distinct ones).

The product of its digits is 19200, while the sum is 38.

Adding to 135151821128 its reverse (821128151531), we get a palindrome (956279972659).

The spelling of 135151821128 in words is "one hundred thirty-five billion, one hundred fifty-one million, eight hundred twenty-one thousand, one hundred twenty-eight".