1178661978244 has 9 divisors (see below), whose sum is σ = 2062662261751. Its totient is φ = 589329903460.

The previous prime is 1178661978167. The next prime is 1178661978271. The reversal of 1178661978244 is 4428791668711.

The square root of 1178661978244 is 1085662.

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, 1899909 + ... + 2442739.

Almost surely, 2^{1178661978244} is an apocalyptic number.

1178661978244 is the 1085662-nd square number.

It is an amenable number.

1178661978244 is a deficient number, since it is larger than the sum of its proper divisors (884000283507).

1178661978244 is an frugal number, since it uses more digits than its factorization.

1178661978244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085666 (or 542833 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 64.

Multiplying 1178661978244 by its sum of digits (64), we get a square (75434366607616 = 8685296²).

The spelling of 1178661978244 in words is "one trillion, one hundred seventy-eight billion, six hundred sixty-one million, nine hundred seventy-eight thousand, two hundred forty-four".