219860009426 has 64 divisors (see below), whose sum is σ = 342773268480. Its totient is φ = 105720975360.

The previous prime is 219860009407. The next prime is 219860009431. The reversal of 219860009426 is 624900068912.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 574046831 + ... + 574047213.

It is an arithmetic number, because the mean of its divisors is an integer number (5355832320).

Almost surely, 2^219860009426 is an apocalyptic number.

219860009426 is a deficient number, since it is larger than the sum of its proper divisors (122913259054).

219860009426 is a wasteful number, since it uses less digits than its factorization.

219860009426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 219860009426 in words is "two hundred nineteen billion, eight hundred sixty million, nine thousand, four hundred twenty-six".