19204971961344 has 176 divisors, whose sum is σ = 57522587039232. Its totient is φ = 5652299169792.

The previous prime is 19204971961313. The next prime is 19204971961447. The reversal of 19204971961344 is 44316917940291.

It is a happy number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9535684 + ... + 11372739.

Almost surely, 2^{19204971961344} is an apocalyptic number.

It is an amenable number.

19204971961344 is an abundant number, since it is smaller than the sum of its proper divisors (38317615077888).

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

19204971961344 is a wasteful number, since it uses less digits than its factorization.

19204971961344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20908482 (or 20908464 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 19204971961344 in words is "nineteen trillion, two hundred four billion, nine hundred seventy-one million, nine hundred sixty-one thousand, three hundred forty-four".