219068236109440 has 128 divisors (see below), whose sum is σ = 535964641660800. Its totient is φ = 85577417920512.

The previous prime is 219068236109339. The next prime is 219068236109501. The reversal of 219068236109440 is 44901632860912.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×219068236109440² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 196459714 + ... + 197571646.

It is an arithmetic number, because the mean of its divisors is an integer number (4187223762975).

Almost surely, 2^{219068236109440} is an apocalyptic number.

219068236109440 is a gapful number since it is divisible by the number (20) 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 219068236109440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267982320830400).

219068236109440 is an abundant number, since it is smaller than the sum of its proper divisors (316896405551360).

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

219068236109440 is a wasteful number, since it uses less digits than its factorization.

219068236109440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119154 (or 1119142 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 219068236109440 in words is "two hundred nineteen trillion, sixty-eight billion, two hundred thirty-six million, one hundred nine thousand, four hundred forty".