1204196774881 has 3 divisors (see below), whose sum is σ = 1204197872241. Its totient is φ = 1204195677522.

The previous prime is 1204196774861. The next prime is 1204196774887. The reversal of 1204196774881 is 1884776914021.

The square root of 1204196774881 is 1097359.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1204196774881 - 2⁹ = 1204196774369 is a prime.

It is a super-2 number, since 2×1204196774881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1204196774887) 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, 548680 + ... + 1646038.

It is an arithmetic number, because the mean of its divisors is an integer number (401399290747).

Almost surely, 2^{1204196774881} is an apocalyptic number.

1204196774881 is the 1097359-th square number.

1204196774881 is the 548680-th centered octagonal number.

It is an amenable number.

1204196774881 is a deficient number, since it is larger than the sum of its proper divisors (1097360).

1204196774881 is an frugal number, since it uses more digits than its factorization.

1204196774881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194718 (or 1097359 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 1204196774881 in words is "one trillion, two hundred four billion, one hundred ninety-six million, seven hundred seventy-four thousand, eight hundred eighty-one".