135421545421000 has 256 divisors, whose sum is σ = 334516689561600. Its totient is φ = 51171305472000.

The previous prime is 135421545420991. The next prime is 135421545421027. The reversal of 135421545421000 is 124545124531.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21316153824 + ... + 21316160176.

It is an arithmetic number, because the mean of its divisors is an integer number (1306705818600).

Almost surely, 2^{135421545421000} is an apocalyptic number.

135421545421000 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 135421545421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167258344780800).

135421545421000 is an abundant number, since it is smaller than the sum of its proper divisors (199095144140600).

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

135421545421000 is a wasteful number, since it uses less digits than its factorization.

135421545421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9417 (or 9403 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 135421545421000 in words is "one hundred thirty-five trillion, four hundred twenty-one billion, five hundred forty-five million, four hundred twenty-one thousand".