2104739395984 has 15 divisors (see below), whose sum is σ = 4077943823233. Its totient is φ = 1052366796448.

The previous prime is 2104739395981. The next prime is 2104739395999. The reversal of 2104739395984 is 4895939374012.

The square root of 2104739395984 is 1450772.

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., 2098036371600 + 6703024384 = 1448460^2 + 81872^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104739395981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5621742 + ... + 5984434.

Almost surely, 2^{2104739395984} is an apocalyptic number.

2104739395984 is the 1450772-nd square number.

It is an amenable number.

2104739395984 is a deficient number, since it is larger than the sum of its proper divisors (1973204427249).

2104739395984 is an frugal number, since it uses more digits than its factorization.

2104739395984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725394 (or 362695 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 64.

Multiplying 2104739395984 by its sum of digits (64), we get a square (134703321342976 = 11606176²).

The spelling of 2104739395984 in words is "two trillion, one hundred four billion, seven hundred thirty-nine million, three hundred ninety-five thousand, nine hundred eighty-four".