63565335040 has 80 divisors (see below), whose sum is σ = 154991374560. Its totient is φ = 24995123200.

The previous prime is 63565335019. The next prime is 63565335047. The reversal of 63565335040 is 4053356536.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 63565334984 and 63565335002.

It is not an unprimeable number, because it can be changed into a prime (63565335047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59386 + ... + 361465.

It is an arithmetic number, because the mean of its divisors is an integer number (1937392182).

Almost surely, 2^63565335040 is an apocalyptic number.

It is an amenable number.

63565335040 is an abundant number, since it is smaller than the sum of its proper divisors (91426039520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63565335040 is an equidigital number, since it uses as much as digits as its factorization.

63565335040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420933 (or 420917 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 63565335040 in words is "sixty-three billion, five hundred sixty-five million, three hundred thirty-five thousand, forty".