135019656 has 64 divisors (see below), whose sum is σ = 383803200. Its totient is φ = 43956864.

The previous prime is 135019649. The next prime is 135019691. The reversal of 135019656 is 656910531.

135019656 is a `hidden beast` number, since 13 + 501 + 96 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 135019656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2020 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (5996925).

Almost surely, 2^135019656 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 135019656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191901600).

135019656 is an abundant number, since it is smaller than the sum of its proper divisors (248783544).

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

135019656 is a wasteful number, since it uses less digits than its factorization.

135019656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14595 (or 14585 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 135019656 is about 11619.7958673980. The cubic root of 135019656 is about 513.0176800445.

The spelling of 135019656 in words is "one hundred thirty-five million, nineteen thousand, six hundred fifty-six".