63305201840689 has 4 divisors (see below), whose sum is σ = 63626548043124. Its totient is φ = 62983855638256.

The previous prime is 63305201840633. The next prime is 63305201840719. The reversal of 63305201840689 is 98604810250336.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50461701249600 + 12843500591089 = 7103640^2 + 3583783^2 .

It is a cyclic number.

It is not a de Polignac number, because 63305201840689 - 2⁷ = 63305201840561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63305201840789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160673100922 + ... + 160673101315.

It is an arithmetic number, because the mean of its divisors is an integer number (15906637010781).

Almost surely, 2^{63305201840689} is an apocalyptic number.

It is an amenable number.

63305201840689 is a deficient number, since it is larger than the sum of its proper divisors (321346202435).

63305201840689 is a wasteful number, since it uses less digits than its factorization.

63305201840689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321346202434.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 63305201840689 in words is "sixty-three trillion, three hundred five billion, two hundred one million, eight hundred forty thousand, six hundred eighty-nine".