2172003907984 has 15 divisors (see below), whose sum is σ = 4208268993483. Its totient is φ = 1085999006448.

The previous prime is 2172003907979. The next prime is 2172003908003. The reversal of 2172003907984 is 4897093002712.

The square root of 2172003907984 is 1473772.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5710867 + ... + 6079309.

Almost surely, 2^{2172003907984} is an apocalyptic number.

2172003907984 is the 1473772-nd square number.

It is an amenable number.

2172003907984 is a deficient number, since it is larger than the sum of its proper divisors (2036265085499).

2172003907984 is an frugal number, since it uses more digits than its factorization.

2172003907984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736894 (or 368445 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 2172003907984 in words is "two trillion, one hundred seventy-two billion, three million, nine hundred seven thousand, nine hundred eighty-four".