63475260815 has 4 divisors (see below), whose sum is σ = 76170312984. Its totient is φ = 50780208648.

The previous prime is 63475260803. The next prime is 63475260839. The reversal of 63475260815 is 51806257436.

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

It is a cyclic number.

It is not a de Polignac number, because 63475260815 - 2²² = 63471066511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63475260815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6347526077 + ... + 6347526086.

It is an arithmetic number, because the mean of its divisors is an integer number (19042578246).

Almost surely, 2^63475260815 is an apocalyptic number.

63475260815 is a deficient number, since it is larger than the sum of its proper divisors (12695052169).

63475260815 is a wasteful number, since it uses less digits than its factorization.

63475260815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12695052168.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 63475260815 in words is "sixty-three billion, four hundred seventy-five million, two hundred sixty thousand, eight hundred fifteen".