635487119989 has 2 divisors, whose sum is σ = 635487119990. Its totient is φ = 635487119988.

The previous prime is 635487119921. The next prime is 635487120001. The reversal of 635487119989 is 989911784536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503149048900 + 132338071089 = 709330^2 + 363783^2 .

It is a cyclic number.

It is not a de Polignac number, because 635487119989 - 2¹³ = 635487111797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (635487419989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317743559994 + 317743559995.

It is an arithmetic number, because the mean of its divisors is an integer number (317743559995).

Almost surely, 2^635487119989 is an apocalyptic number.

It is an amenable number.

635487119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

635487119989 is an equidigital number, since it uses as much as digits as its factorization.

635487119989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 70.

The spelling of 635487119989 in words is "six hundred thirty-five billion, four hundred eighty-seven million, one hundred nineteen thousand, nine hundred eighty-nine".