219590742494 has 4 divisors (see below), whose sum is σ = 329386113744. Its totient is φ = 109795371246.

The previous prime is 219590742493. The next prime is 219590742533. The reversal of 219590742494 is 494247095912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219590742493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54897685622 + ... + 54897685625.

It is an arithmetic number, because the mean of its divisors is an integer number (82346528436).

Almost surely, 2^219590742494 is an apocalyptic number.

219590742494 is a deficient number, since it is larger than the sum of its proper divisors (109795371250).

219590742494 is a wasteful number, since it uses less digits than its factorization.

219590742494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109795371249.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 219590742494 in words is "two hundred nineteen billion, five hundred ninety million, seven hundred forty-two thousand, four hundred ninety-four".