13663450116520 has 32 divisors (see below), whose sum is σ = 31263826543200. Its totient is φ = 5372746485568.

The previous prime is 13663450116509. The next prime is 13663450116521. The reversal of 13663450116520 is 2561105436631.

It is not an unprimeable number, because it can be changed into a prime (13663450116521) 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, 2894796394 + ... + 2894801113.

It is an arithmetic number, because the mean of its divisors is an integer number (976994579475).

Almost surely, 2^{13663450116520} is an apocalyptic number.

13663450116520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13663450116520 is an abundant number, since it is smaller than the sum of its proper divisors (17600376426680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13663450116520 is a wasteful number, since it uses less digits than its factorization.

13663450116520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789597577 (or 5789597573 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 13663450116520 in words is "thirteen trillion, six hundred sixty-three billion, four hundred fifty million, one hundred sixteen thousand, five hundred twenty".