2163446789956 has 27 divisors (see below), whose sum is σ = 3995887575519. Its totient is φ = 1024764109128.

The previous prime is 2163446789897. The next prime is 2163446789983. The reversal of 2163446789956 is 6599876443612.

The square root of 2163446789956 is 1470866.

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 8 ways as a sum of consecutive naturals, for example, 55873555 + ... + 55912261.

Almost surely, 2^{2163446789956} is an apocalyptic number.

2163446789956 is the 1470866-th square number.

It is an amenable number.

2163446789956 is a deficient number, since it is larger than the sum of its proper divisors (1832440785563).

2163446789956 is an frugal number, since it uses more digits than its factorization.

2163446789956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77456 (or 38728 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 70.

The spelling of 2163446789956 in words is "two trillion, one hundred sixty-three billion, four hundred forty-six million, seven hundred eighty-nine thousand, nine hundred fifty-six".