2218752372989 has 2 divisors, whose sum is σ = 2218752372990. Its totient is φ = 2218752372988.

The previous prime is 2218752372931. The next prime is 2218752373001. The reversal of 2218752372989 is 9892732578122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2168874744100 + 49877628889 = 1472710^2 + 223333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2218752372989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218752372919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109376186494 + 1109376186495.

It is an arithmetic number, because the mean of its divisors is an integer number (1109376186495).

Almost surely, 2^{2218752372989} is an apocalyptic number.

It is an amenable number.

2218752372989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218752372989 is an equidigital number, since it uses as much as digits as its factorization.

2218752372989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 65.

The spelling of 2218752372989 in words is "two trillion, two hundred eighteen billion, seven hundred fifty-two million, three hundred seventy-two thousand, nine hundred eighty-nine".