219115542191 has 24 divisors (see below), whose sum is σ = 279148922640. Its totient is φ = 170427704832.

The previous prime is 219115542127. The next prime is 219115542223. The reversal of 219115542191 is 191245511912.

It is not a de Polignac number, because 219115542191 - 2⁶ = 219115542127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219115541191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2877506 + ... + 2952671.

It is an arithmetic number, because the mean of its divisors is an integer number (11631205110).

Almost surely, 2^219115542191 is an apocalyptic number.

219115542191 is a deficient number, since it is larger than the sum of its proper divisors (60033380449).

219115542191 is a wasteful number, since it uses less digits than its factorization.

219115542191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5830263 (or 5830256 counting only the distinct ones).

The product of its digits is 32400, while the sum is 41.

The spelling of 219115542191 in words is "two hundred nineteen billion, one hundred fifteen million, five hundred forty-two thousand, one hundred ninety-one".