63976063667 has 4 divisors (see below), whose sum is σ = 63985175016. Its totient is φ = 63966952320.

The previous prime is 63976063663. The next prime is 63976063751. The reversal of 63976063667 is 76636067936.

63976063667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63976063667 - 2² = 63976063663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63976063661) 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, 4545134 + ... + 4559187.

It is an arithmetic number, because the mean of its divisors is an integer number (15996293754).

Almost surely, 2^63976063667 is an apocalyptic number.

63976063667 is a deficient number, since it is larger than the sum of its proper divisors (9111349).

63976063667 is an equidigital number, since it uses as much as digits as its factorization.

63976063667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111348.

The product of its (nonzero) digits is 30862944, while the sum is 59.

The spelling of 63976063667 in words is "sixty-three billion, nine hundred seventy-six million, sixty-three thousand, six hundred sixty-seven".