63656671007 has 4 divisors (see below), whose sum is σ = 63752975256. Its totient is φ = 63560366760.

The previous prime is 63656670967. The next prime is 63656671019. The reversal of 63656671007 is 70017665636.

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 63656671007 - 2²⁰ = 63655622431 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 (63656671607) by changing a digit.

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, 48151133 + ... + 48152454.

It is an arithmetic number, because the mean of its divisors is an integer number (15938243814).

Almost surely, 2^63656671007 is an apocalyptic number.

63656671007 is a deficient number, since it is larger than the sum of its proper divisors (96304249).

63656671007 is an equidigital number, since it uses as much as digits as its factorization.

63656671007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96304248.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 63656671007 in words is "sixty-three billion, six hundred fifty-six million, six hundred seventy-one thousand, seven".