63385942809 has 64 divisors (see below), whose sum is σ = 98646073344. Its totient is φ = 35459652096.

The previous prime is 63385942777. The next prime is 63385942813. The reversal of 63385942809 is 90824958336.

It is not a de Polignac number, because 63385942809 - 2⁵ = 63385942777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63385942819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87188004 + ... + 87188730.

It is an arithmetic number, because the mean of its divisors is an integer number (1541344896).

Almost surely, 2^63385942809 is an apocalyptic number.

It is an amenable number.

63385942809 is a deficient number, since it is larger than the sum of its proper divisors (35260130535).

63385942809 is a wasteful number, since it uses less digits than its factorization.

63385942809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 63385942809 in words is "sixty-three billion, three hundred eighty-five million, nine hundred forty-two thousand, eight hundred nine".