63378487399 has 4 divisors (see below), whose sum is σ = 63834447880. Its totient is φ = 62922526920.

The previous prime is 63378487379. The next prime is 63378487531. The reversal of 63378487399 is 99378487336.

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 63378487399 - 2⁹ = 63378486887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63378487309) 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, 227980032 + ... + 227980309.

It is an arithmetic number, because the mean of its divisors is an integer number (15958611970).

Almost surely, 2^63378487399 is an apocalyptic number.

63378487399 is a deficient number, since it is larger than the sum of its proper divisors (455960481).

63378487399 is a wasteful number, since it uses less digits than its factorization.

63378487399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455960480.

The product of its digits is 164602368, while the sum is 67.

The spelling of 63378487399 in words is "sixty-three billion, three hundred seventy-eight million, four hundred eighty-seven thousand, three hundred ninety-nine".