2981321774468 has 6 divisors (see below), whose sum is σ = 5217313105326. Its totient is φ = 1490660887232.

The previous prime is 2981321774449. The next prime is 2981321774521. The reversal of 2981321774468 is 8644771231892.

It can be written as a sum of positive squares in only one way, i.e., 2957361211204 + 23960563264 = 1719698^2 + 154792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2981321774468.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372665221805 + ... + 372665221812.

It is an arithmetic number, because the mean of its divisors is an integer number (869552184221).

Almost surely, 2^{2981321774468} is an apocalyptic number.

It is an amenable number.

2981321774468 is a deficient number, since it is larger than the sum of its proper divisors (2235991330858).

2981321774468 is a wasteful number, since it uses less digits than its factorization.

2981321774468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745330443621 (or 745330443619 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 62.

The spelling of 2981321774468 in words is "two trillion, nine hundred eighty-one billion, three hundred twenty-one million, seven hundred seventy-four thousand, four hundred sixty-eight".