19440443404412 has 12 divisors (see below), whose sum is σ = 34020819032760. Its totient is φ = 9720209395056.

The previous prime is 19440443404379. The next prime is 19440443404451. The reversal of 19440443404412 is 21440434404491.

It is a happy 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, 1110503 + ... + 6333569.

It is an arithmetic number, because the mean of its divisors is an integer number (2835068252730).

Almost surely, 2^{19440443404412} is an apocalyptic number.

It is an amenable number.

19440443404412 is a deficient number, since it is larger than the sum of its proper divisors (14580375628348).

19440443404412 is a wasteful number, since it uses less digits than its factorization.

19440443404412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153580 (or 6153578 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 44.

The spelling of 19440443404412 in words is "nineteen trillion, four hundred forty billion, four hundred forty-three million, four hundred four thousand, four hundred twelve".