2249551797989 has 2 divisors, whose sum is σ = 2249551797990. Its totient is φ = 2249551797988.

The previous prime is 2249551797973. The next prime is 2249551798009. The reversal of 2249551797989 is 9897971559422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1518851661889 + 730700136100 = 1232417^2 + 854810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2249551797989 - 2⁴ = 2249551797973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2249551797929) 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, 1124775898994 + 1124775898995.

It is an arithmetic number, because the mean of its divisors is an integer number (1124775898995).

Almost surely, 2^{2249551797989} is an apocalyptic number.

It is an amenable number.

2249551797989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2249551797989 is an equidigital number, since it uses as much as digits as its factorization.

2249551797989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1028764800, while the sum is 77.

The spelling of 2249551797989 in words is "two trillion, two hundred forty-nine billion, five hundred fifty-one million, seven hundred ninety-seven thousand, nine hundred eighty-nine".