19447341487396 has 81 divisors (see below), whose sum is σ = 35567282246769. Its totient is φ = 9303789602016.

The previous prime is 19447341487381. The next prime is 19447341487463. The reversal of 19447341487396 is 69378414374491.

The square root of 19447341487396 is 4409914.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10197714144996 + 9249627342400 = 3193386^2 + 3041320^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 35552726395 + ... + 35552726941.

Almost surely, 2^{19447341487396} is an apocalyptic number.

19447341487396 is the 4409914-th square number.

It is an amenable number.

19447341487396 is a deficient number, since it is larger than the sum of its proper divisors (16119940759373).

19447341487396 is an frugal number, since it uses more digits than its factorization.

19447341487396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 717 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 70.

The spelling of 19447341487396 in words is "nineteen trillion, four hundred forty-seven billion, three hundred forty-one million, four hundred eighty-seven thousand, three hundred ninety-six".