2787952895989 has 2 divisors, whose sum is σ = 2787952895990. Its totient is φ = 2787952895988.

The previous prime is 2787952895983. The next prime is 2787952896019. The reversal of 2787952895989 is 9895982597872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2751783322500 + 36169573489 = 1658850^2 + 190183^2 .

It is a cyclic number.

It is not a de Polignac number, because 2787952895989 - 2⁹ = 2787952895477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2787952895983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1393976447994 + 1393976447995.

It is an arithmetic number, because the mean of its divisors is an integer number (1393976447995).

Almost surely, 2^{2787952895989} is an apocalyptic number.

It is an amenable number.

2787952895989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2787952895989 is an equidigital number, since it uses as much as digits as its factorization.

2787952895989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16460236800, while the sum is 88.

The spelling of 2787952895989 in words is "two trillion, seven hundred eighty-seven billion, nine hundred fifty-two million, eight hundred ninety-five thousand, nine hundred eighty-nine".