63500538398 has 24 divisors (see below), whose sum is σ = 106672608504. Its totient is φ = 28319273840.

The previous prime is 63500538347. The next prime is 63500538403. The reversal of 63500538398 is 89383500536.

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 11 ways as a sum of consecutive naturals, for example, 2462636 + ... + 2488287.

It is an arithmetic number, because the mean of its divisors is an integer number (4444692021).

Almost surely, 2^63500538398 is an apocalyptic number.

63500538398 is a deficient number, since it is larger than the sum of its proper divisors (43172070106).

63500538398 is a wasteful number, since it uses less digits than its factorization.

63500538398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951000 (or 4950989 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 63500538398 in words is "sixty-three billion, five hundred million, five hundred thirty-eight thousand, three hundred ninety-eight".