219143379947 has 4 divisors (see below), whose sum is σ = 219452468640. Its totient is φ = 218834291256.

The previous prime is 219143379937. The next prime is 219143380013. The reversal of 219143379947 is 749973341912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 219143379947 - 2¹⁴ = 219143363563 is a prime.

It is a super-3 number, since 3×219143379947³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219143379937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154543283 + ... + 154544700.

It is an arithmetic number, because the mean of its divisors is an integer number (54863117160).

Almost surely, 2^219143379947 is an apocalyptic number.

219143379947 is a deficient number, since it is larger than the sum of its proper divisors (309088693).

219143379947 is an equidigital number, since it uses as much as digits as its factorization.

219143379947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309088692.

The product of its digits is 10287648, while the sum is 59.

The spelling of 219143379947 in words is "two hundred nineteen billion, one hundred forty-three million, three hundred seventy-nine thousand, nine hundred forty-seven".