135621089532 has 48 divisors (see below), whose sum is σ = 360186103200. Its totient is φ = 44104417920.

The previous prime is 135621089519. The next prime is 135621089551. The reversal of 135621089532 is 235980126531.

135621089532 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 2 + 108 + 9 + 532 = 666.

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, 15309607 + ... + 15318462.

It is an arithmetic number, because the mean of its divisors is an integer number (7503877150).

Almost surely, 2^135621089532 is an apocalyptic number.

135621089532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135621089532 is an abundant number, since it is smaller than the sum of its proper divisors (224565013668).

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

135621089532 is a wasteful number, since it uses less digits than its factorization.

135621089532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30628123 (or 30628115 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 135621089532 in words is "one hundred thirty-five billion, six hundred twenty-one million, eighty-nine thousand, five hundred thirty-two".