135320215536 has 120 divisors (see below), whose sum is σ = 431099300736. Its totient is φ = 39223240320.

The previous prime is 135320215531. The next prime is 135320215673. The reversal of 135320215536 is 635512023531.

135320215536 is a `hidden beast` number, since 13 + 53 + 20 + 21 + 553 + 6 = 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 135320215536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135320215531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1820730 + ... + 1893593.

Almost surely, 2^135320215536 is an apocalyptic number.

135320215536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135320215536 is an abundant number, since it is smaller than the sum of its proper divisors (295779085200).

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

135320215536 is a wasteful number, since it uses less digits than its factorization.

135320215536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714371 (or 3714362 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 135320215536 in words is "one hundred thirty-five billion, three hundred twenty million, two hundred fifteen thousand, five hundred thirty-six".