19444594993684 has 12 divisors (see below), whose sum is σ = 38889189987424. Its totient is φ = 8333397854424.

The previous prime is 19444594993507. The next prime is 19444594993693. The reversal of 19444594993684 is 48639949544491.

19444594993684 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347224910574 + ... + 347224910629.

Almost surely, 2^{19444594993684} is an apocalyptic number.

19444594993684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19444594993684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19444594993684 is a wasteful number, since it uses less digits than its factorization.

19444594993684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694449821214 (or 694449821212 counting only the distinct ones).

The product of its digits is 4837294080, while the sum is 79.

The spelling of 19444594993684 in words is "nineteen trillion, four hundred forty-four billion, five hundred ninety-four million, nine hundred ninety-three thousand, six hundred eighty-four".