2788984561945 has 16 divisors (see below), whose sum is σ = 3523099104000. Its totient is φ = 2113653979008.

The previous prime is 2788984561933. The next prime is 2788984561967. The reversal of 2788984561945 is 5491654898872.

It is a cyclic number.

It is not a de Polignac number, because 2788984561945 - 2⁴¹ = 589961306393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1280461 + ... + 2686549.

It is an arithmetic number, because the mean of its divisors is an integer number (220193694000).

Almost surely, 2^{2788984561945} is an apocalyptic number.

It is an amenable number.

2788984561945 is a deficient number, since it is larger than the sum of its proper divisors (734114542055).

2788984561945 is a wasteful number, since it uses less digits than its factorization.

2788984561945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426992.

The product of its digits is 1393459200, while the sum is 76.

The spelling of 2788984561945 in words is "two trillion, seven hundred eighty-eight billion, nine hundred eighty-four million, five hundred sixty-one thousand, nine hundred forty-five".