63898366904 has 8 divisors (see below), whose sum is σ = 119809437960. Its totient is φ = 31949183448.

The previous prime is 63898366877. The next prime is 63898366907. The reversal of 63898366904 is 40966389836.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63898366907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993647924 + ... + 3993647939.

It is an arithmetic number, because the mean of its divisors is an integer number (14976179745).

Almost surely, 2^63898366904 is an apocalyptic number.

It is an amenable number.

63898366904 is a deficient number, since it is larger than the sum of its proper divisors (55911071056).

63898366904 is a wasteful number, since it uses less digits than its factorization.

63898366904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987295869 (or 7987295865 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 62.

The spelling of 63898366904 in words is "sixty-three billion, eight hundred ninety-eight million, three hundred sixty-six thousand, nine hundred four".