63804999965 has 32 divisors (see below), whose sum is σ = 88192661760. Its totient is φ = 43409009664.

The previous prime is 63804999961. The next prime is 63804999971. The reversal of 63804999965 is 56999940836.

63804999965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 63804999965 - 2² = 63804999961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63804999895 and 63804999904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63804999961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2314181 + ... + 2341589.

It is an arithmetic number, because the mean of its divisors is an integer number (2756020680).

Almost surely, 2^63804999965 is an apocalyptic number.

It is an amenable number.

63804999965 is a deficient number, since it is larger than the sum of its proper divisors (24387661795).

63804999965 is a wasteful number, since it uses less digits than its factorization.

63804999965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27941.

The product of its (nonzero) digits is 113374080, while the sum is 68.

The spelling of 63804999965 in words is "sixty-three billion, eight hundred four million, nine hundred ninety-nine thousand, nine hundred sixty-five".