12197779771024 has 15 divisors (see below), whose sum is σ = 23633225373513. Its totient is φ = 6098882900448.

The previous prime is 12197779771013. The next prime is 12197779771033. The reversal of 12197779771024 is 42017797779121.

The square root of 12197779771024 is 3492532.

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., 34202803600 + 12163576967424 = 184940^2 + 3487632^2 .

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, 13533562 + ... + 14406694.

Almost surely, 2^{12197779771024} is an apocalyptic number.

12197779771024 is the 3492532-nd square number.

It is an amenable number.

12197779771024 is a deficient number, since it is larger than the sum of its proper divisors (11435445602489).

12197779771024 is an frugal number, since it uses more digits than its factorization.

12197779771024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746274 (or 873135 counting only the distinct ones).

The product of its (nonzero) digits is 21781872, while the sum is 64.

Multiplying 12197779771024 by its sum of digits (64), we get a square (780657905345536 = 27940256²).

The spelling of 12197779771024 in words is "twelve trillion, one hundred ninety-seven billion, seven hundred seventy-nine million, seven hundred seventy-one thousand, twenty-four".