135421555324540 has 96 divisors (see below), whose sum is σ = 304624746034560. Its totient is φ = 50390302212096.

The previous prime is 135421555324507. The next prime is 135421555324609. The reversal of 135421555324540 is 45423555124531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8883634 + ... + 18701926.

It is an arithmetic number, because the mean of its divisors is an integer number (3173174437860).

Almost surely, 2^{135421555324540} is an apocalyptic number.

135421555324540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135421555324540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152312373017280).

135421555324540 is an abundant number, since it is smaller than the sum of its proper divisors (169203190710020).

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

135421555324540 is a wasteful number, since it uses less digits than its factorization.

135421555324540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9818791 (or 9818789 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 49.

The spelling of 135421555324540 in words is "one hundred thirty-five trillion, four hundred twenty-one billion, five hundred fifty-five million, three hundred twenty-four thousand, five hundred forty".