135511512 has 32 divisors (see below), whose sum is σ = 339187200. Its totient is φ = 45116064.

The previous prime is 135511511. The next prime is 135511529. The reversal of 135511512 is 215115531.

135511512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×135511512² = 36726739769052288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135511511) 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, 20289 + ... + 26127.

It is an arithmetic number, because the mean of its divisors is an integer number (10599600).

Almost surely, 2^135511512 is an apocalyptic number.

135511512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135511512 is an abundant number, since it is smaller than the sum of its proper divisors (203675688).

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

135511512 is a wasteful number, since it uses less digits than its factorization.

135511512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815 (or 6811 counting only the distinct ones).

The product of its digits is 750, while the sum is 24.

The square root of 135511512 is about 11640.9411990612. The cubic root of 135511512 is about 513.6398735068.

The spelling of 135511512 in words is "one hundred thirty-five million, five hundred eleven thousand, five hundred twelve".