13063966876921 has 3 divisors (see below), whose sum is σ = 13063970491333. Its totient is φ = 13063963262510.

The previous prime is 13063966876903. The next prime is 13063966877089. The reversal of 13063966876921 is 12967866936031.

The square root of 13063966876921 is 3614411.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 13063966876921 - 2²⁷ = 13063832659193 is a prime.

It is a super-2 number, since 2×13063966876921² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13063966876321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1807206 + ... + 5421616.

Almost surely, 2^{13063966876921} is an apocalyptic number.

13063966876921 is the 3614411-st square number.

13063966876921 is the 1807206-th centered octagonal number.

It is an amenable number.

13063966876921 is a deficient number, since it is larger than the sum of its proper divisors (3614412).

13063966876921 is an frugal number, since it uses more digits than its factorization.

13063966876921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7228822 (or 3614411 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 67.

The spelling of 13063966876921 in words is "thirteen trillion, sixty-three billion, nine hundred sixty-six million, eight hundred seventy-six thousand, nine hundred twenty-one".