63878925767 has 4 divisors (see below), whose sum is σ = 64018705056. Its totient is φ = 63739146480.

The previous prime is 63878925749. The next prime is 63878925793. The reversal of 63878925767 is 76752987836.

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 63878925767 - 2¹⁴ = 63878909383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63878925697 and 63878925706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63878925727) 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, 69888959 + ... + 69889872.

It is an arithmetic number, because the mean of its divisors is an integer number (16004676264).

Almost surely, 2^63878925767 is an apocalyptic number.

63878925767 is a deficient number, since it is larger than the sum of its proper divisors (139779289).

63878925767 is a wasteful number, since it uses less digits than its factorization.

63878925767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139779288.

The product of its digits is 213373440, while the sum is 68.

The spelling of 63878925767 in words is "sixty-three billion, eight hundred seventy-eight million, nine hundred twenty-five thousand, seven hundred sixty-seven".