219145399158 has 64 divisors (see below), whose sum is σ = 518984040960. Its totient is φ = 60359668992.

The previous prime is 219145399153. The next prime is 219145399177. The reversal of 219145399158 is 851993541912.

219145399158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 219145399098 and 219145399107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219145399153) by changing a digit.

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, 643266 + ... + 923082.

It is an arithmetic number, because the mean of its divisors is an integer number (8109125640).

Almost surely, 2^219145399158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219145399158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259492020480).

219145399158 is an abundant number, since it is smaller than the sum of its proper divisors (299838641802).

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

219145399158 is a wasteful number, since it uses less digits than its factorization.

219145399158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280501.

The product of its digits is 3499200, while the sum is 57.

The spelling of 219145399158 in words is "two hundred nineteen billion, one hundred forty-five million, three hundred ninety-nine thousand, one hundred fifty-eight".