2897121052816 has 20 divisors (see below), whose sum is σ = 5613227691372. Its totient is φ = 1448546164736.

The previous prime is 2897121052807. The next prime is 2897121052817. The reversal of 2897121052816 is 6182501217982.

It can be written as a sum of positive squares in 2 ways, for example, as 62948802816 + 2834172250000 = 250896^2 + 1683500^2 .

It is not an unprimeable number, because it can be changed into a prime (2897121052817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872400 + ... + 2560336.

Almost surely, 2^{2897121052816} is an apocalyptic number.

It is an amenable number.

2897121052816 is a deficient number, since it is larger than the sum of its proper divisors (2716106638556).

2897121052816 is a wasteful number, since it uses less digits than its factorization.

2897121052816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795218 (or 1795212 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 52.

The spelling of 2897121052816 in words is "two trillion, eight hundred ninety-seven billion, one hundred twenty-one million, fifty-two thousand, eight hundred sixteen".