19413404871144 has 128 divisors (see below), whose sum is σ = 50082210420480. Its totient is φ = 6267072358400.

The previous prime is 19413404871139. The next prime is 19413404871229. The reversal of 19413404871144 is 44117840431491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110051974 + ... + 110228234.

It is an arithmetic number, because the mean of its divisors is an integer number (391267268910).

Almost surely, 2^{19413404871144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19413404871144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25041105210240).

19413404871144 is an abundant number, since it is smaller than the sum of its proper divisors (30668805549336).

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

19413404871144 is a wasteful number, since it uses less digits than its factorization.

19413404871144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177131 (or 177127 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 19413404871144 in words is "nineteen trillion, four hundred thirteen billion, four hundred four million, eight hundred seventy-one thousand, one hundred forty-four".