632736845989 has 2 divisors, whose sum is σ = 632736845990. Its totient is φ = 632736845988.

The previous prime is 632736845987. The next prime is 632736846101. The reversal of 632736845989 is 989548637236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543957876225 + 88778969764 = 737535^2 + 297958^2 .

It is a cyclic number.

It is not a de Polignac number, because 632736845989 - 2¹ = 632736845987 is a prime.

Together with 632736845987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632736845987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316368422994 + 316368422995.

It is an arithmetic number, because the mean of its divisors is an integer number (316368422995).

Almost surely, 2^632736845989 is an apocalyptic number.

It is an amenable number.

632736845989 is a deficient number, since it is larger than the sum of its proper divisors (1).

632736845989 is an equidigital number, since it uses as much as digits as its factorization.

632736845989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 70.

The spelling of 632736845989 in words is "six hundred thirty-two billion, seven hundred thirty-six million, eight hundred forty-five thousand, nine hundred eighty-nine".