63516951675897 has 4 divisors (see below), whose sum is σ = 84689268901200. Its totient is φ = 42344634450596.

The previous prime is 63516951675889. The next prime is 63516951675911. The reversal of 63516951675897 is 79857615961536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63516951675897 - 2³ = 63516951675889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63516951675857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10586158612647 + ... + 10586158612652.

It is an arithmetic number, because the mean of its divisors is an integer number (21172317225300).

Almost surely, 2^{63516951675897} is an apocalyptic number.

It is an amenable number.

63516951675897 is a deficient number, since it is larger than the sum of its proper divisors (21172317225303).

63516951675897 is a wasteful number, since it uses less digits than its factorization.

63516951675897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21172317225302.

The product of its digits is 2571912000, while the sum is 78.

The spelling of 63516951675897 in words is "sixty-three trillion, five hundred sixteen billion, nine hundred fifty-one million, six hundred seventy-five thousand, eight hundred ninety-seven".