19713943974900 has 144 divisors (see below), whose sum is σ = 65515017881600. Its totient is φ = 4483400803200.

The previous prime is 19713943974887. The next prime is 19713943974911. The reversal of 19713943974900 is 947934931791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23169016 + ... + 24004815.

Almost surely, 2^{19713943974900} is an apocalyptic number.

19713943974900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19713943974900 is an abundant number, since it is smaller than the sum of its proper divisors (45801073906700).

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

19713943974900 is a wasteful number, since it uses less digits than its factorization.

19713943974900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47174054 (or 47174047 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 66.

The spelling of 19713943974900 in words is "nineteen trillion, seven hundred thirteen billion, nine hundred forty-three million, nine hundred seventy-four thousand, nine hundred".