13664428963 has 4 divisors (see below), whose sum is σ = 14468218920. Its totient is φ = 12860639008.

The previous prime is 13664428879. The next prime is 13664428991. The reversal of 13664428963 is 36982446631.

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 13664428963 - 2¹³ = 13664420771 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 13664428963.

It is not an unprimeable number, because it can be changed into a prime (13664428763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401894953 + ... + 401894986.

It is an arithmetic number, because the mean of its divisors is an integer number (3617054730).

Almost surely, 2^13664428963 is an apocalyptic number.

13664428963 is a deficient number, since it is larger than the sum of its proper divisors (803789957).

13664428963 is an equidigital number, since it uses as much as digits as its factorization.

13664428963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803789956.

The product of its digits is 4478976, while the sum is 52.

The spelling of 13664428963 in words is "thirteen billion, six hundred sixty-four million, four hundred twenty-eight thousand, nine hundred sixty-three".