12663520511 has 8 divisors (see below), whose sum is σ = 12963308160. Its totient is φ = 12363973272.

The previous prime is 12663520487. The next prime is 12663520559. The reversal of 12663520511 is 11502536621.

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

It is a cyclic number.

It is not a de Polignac number, because 12663520511 - 2¹⁴ = 12663504127 is a prime.

It is a super-2 number, since 2×12663520511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663520561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48800 + ... + 166458.

It is an arithmetic number, because the mean of its divisors is an integer number (1620413520).

Almost surely, 2^12663520511 is an apocalyptic number.

12663520511 is a deficient number, since it is larger than the sum of its proper divisors (299787649).

12663520511 is a wasteful number, since it uses less digits than its factorization.

12663520511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120205.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 12663520511 in words is "twelve billion, six hundred sixty-three million, five hundred twenty thousand, five hundred eleven".