134342555221578 has 96 divisors (see below), whose sum is σ = 299495984457600. Its totient is φ = 40138414581760.

The previous prime is 134342555221577. The next prime is 134342555221601. The reversal of 134342555221578 is 875122555243431.

It is not an unprimeable number, because it can be changed into a prime (134342555221577) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19863763 + ... + 25753721.

It is an arithmetic number, because the mean of its divisors is an integer number (3119749838100).

Almost surely, 2^{134342555221578} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134342555221578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149747992228800).

134342555221578 is an abundant number, since it is smaller than the sum of its proper divisors (165153429236022).

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

134342555221578 is a wasteful number, since it uses less digits than its factorization.

134342555221578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890428 (or 5890417 counting only the distinct ones).

The product of its digits is 40320000, while the sum is 57.

The spelling of 134342555221578 in words is "one hundred thirty-four trillion, three hundred forty-two billion, five hundred fifty-five million, two hundred twenty-one thousand, five hundred seventy-eight".