63505050538 has 4 divisors (see below), whose sum is σ = 95257575810. Its totient is φ = 31752525268.

The previous prime is 63505050533. The next prime is 63505050547. The reversal of 63505050538 is 83505050536.

63505050538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58262856129 + 5242194409 = 241377^2 + 72403^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63505050538.

It is not an unprimeable number, because it can be changed into a prime (63505050533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15876262633 + ... + 15876262636.

Almost surely, 2^63505050538 is an apocalyptic number.

63505050538 is a deficient number, since it is larger than the sum of its proper divisors (31752525272).

63505050538 is a wasteful number, since it uses less digits than its factorization.

63505050538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31752525271.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 63505050538 in words is "sixty-three billion, five hundred five million, fifty thousand, five hundred thirty-eight".