63813530506 has 32 divisors (see below), whose sum is σ = 105427396800. Its totient is φ = 28727153280.

The previous prime is 63813530491. The next prime is 63813530519. The reversal of 63813530506 is 60503531836.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7115181 + ... + 7124143.

It is an arithmetic number, because the mean of its divisors is an integer number (3294606150).

Almost surely, 2^63813530506 is an apocalyptic number.

63813530506 is a deficient number, since it is larger than the sum of its proper divisors (41613866294).

63813530506 is a wasteful number, since it uses less digits than its factorization.

63813530506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12054.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 63813530506 in words is "sixty-three billion, eight hundred thirteen million, five hundred thirty thousand, five hundred six".