63691500198 has 32 divisors (see below), whose sum is σ = 128394807552. Its totient is φ = 21061965600.

The previous prime is 63691500181. The next prime is 63691500209. The reversal of 63691500198 is 89100519636.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 3017943 + ... + 3038973.

It is an arithmetic number, because the mean of its divisors is an integer number (4012337736).

Almost surely, 2^63691500198 is an apocalyptic number.

63691500198 is an abundant number, since it is smaller than the sum of its proper divisors (64703307354).

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

63691500198 is a wasteful number, since it uses less digits than its factorization.

63691500198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25020.

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 63691500198 in words is "sixty-three billion, six hundred ninety-one million, five hundred thousand, one hundred ninety-eight".