19204971961343 has 16 divisors (see below), whose sum is σ = 21963976464384. Its totient is φ = 16449829740960.

The previous prime is 19204971961313. The next prime is 19204971961447. The reversal of 19204971961343 is 34316917940291.

It is not a de Polignac number, because 19204971961343 - 2¹⁰ = 19204971960319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19204971961313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78856946 + ... + 79100112.

It is an arithmetic number, because the mean of its divisors is an integer number (1372748529024).

Almost surely, 2^{19204971961343} is an apocalyptic number.

19204971961343 is a deficient number, since it is larger than the sum of its proper divisors (2759004503041).

19204971961343 is a wasteful number, since it uses less digits than its factorization.

19204971961343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251062.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 19204971961343 in words is "nineteen trillion, two hundred four billion, nine hundred seventy-one million, nine hundred sixty-one thousand, three hundred forty-three".