63276561247 has 4 divisors (see below), whose sum is σ = 64986738616. Its totient is φ = 61566383880.

The previous prime is 63276561239. The next prime is 63276561253. The reversal of 63276561247 is 74216567236.

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 63276561247 - 2³ = 63276561239 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 63276561247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63276561277) 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, 855088629 + ... + 855088702.

It is an arithmetic number, because the mean of its divisors is an integer number (16246684654).

Almost surely, 2^63276561247 is an apocalyptic number.

63276561247 is a deficient number, since it is larger than the sum of its proper divisors (1710177369).

63276561247 is a wasteful number, since it uses less digits than its factorization.

63276561247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710177368.

The product of its digits is 2540160, while the sum is 49.

The spelling of 63276561247 in words is "sixty-three billion, two hundred seventy-six million, five hundred sixty-one thousand, two hundred forty-seven".