13664666734 has 8 divisors (see below), whose sum is σ = 21575789640. Its totient is φ = 6472736856.

The previous prime is 13664666699. The next prime is 13664666761. The reversal of 13664666734 is 43766646631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179798209 + ... + 179798284.

It is an arithmetic number, because the mean of its divisors is an integer number (2696973705).

Almost surely, 2^13664666734 is an apocalyptic number.

13664666734 is a deficient number, since it is larger than the sum of its proper divisors (7911122906).

13664666734 is a wasteful number, since it uses less digits than its factorization.

13664666734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359596514.

The product of its digits is 7838208, while the sum is 52.

The spelling of 13664666734 in words is "thirteen billion, six hundred sixty-four million, six hundred sixty-six thousand, seven hundred thirty-four".