2788968561251 has 4 divisors (see below), whose sum is σ = 2803419175752. Its totient is φ = 2774517946752.

The previous prime is 2788968561227. The next prime is 2788968561259. The reversal of 2788968561251 is 1521658698872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2788968561251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2788968561259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7225306961 + ... + 7225307346.

It is an arithmetic number, because the mean of its divisors is an integer number (700854793938).

Almost surely, 2^{2788968561251} is an apocalyptic number.

2788968561251 is a deficient number, since it is larger than the sum of its proper divisors (14450614501).

2788968561251 is a wasteful number, since it uses less digits than its factorization.

2788968561251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14450614500.

The product of its digits is 116121600, while the sum is 68.

The spelling of 2788968561251 in words is "two trillion, seven hundred eighty-eight billion, nine hundred sixty-eight million, five hundred sixty-one thousand, two hundred fifty-one".