219939587147 has 12 divisors (see below), whose sum is σ = 255865873176. Its totient is φ = 188506543680.

The previous prime is 219939587099. The next prime is 219939587159. The reversal of 219939587147 is 741785939912.

It is not a de Polignac number, because 219939587147 - 2¹⁸ = 219939325003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219939587047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 592508 + ... + 889350.

It is an arithmetic number, because the mean of its divisors is an integer number (21322156098).

Almost surely, 2^219939587147 is an apocalyptic number.

219939587147 is a deficient number, since it is larger than the sum of its proper divisors (35926286029).

219939587147 is a wasteful number, since it uses less digits than its factorization.

219939587147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311978 (or 311971 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 65.

The spelling of 219939587147 in words is "two hundred nineteen billion, nine hundred thirty-nine million, five hundred eighty-seven thousand, one hundred forty-seven".