13563225036988 has 24 divisors (see below), whose sum is σ = 25893545215104. Its totient is φ = 6165074766000.

The previous prime is 13563225036961. The next prime is 13563225037007. The reversal of 13563225036988 is 88963052236531.

It is a happy number.

It is a super-2 number, since 2×13563225036988² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11844313 + ... + 12938863.

It is an arithmetic number, because the mean of its divisors is an integer number (1078897717296).

Almost surely, 2^{13563225036988} is an apocalyptic number.

It is an amenable number.

13563225036988 is a deficient number, since it is larger than the sum of its proper divisors (12330320178116).

13563225036988 is a wasteful number, since it uses less digits than its factorization.

13563225036988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376193 (or 1376191 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 61.

The spelling of 13563225036988 in words is "thirteen trillion, five hundred sixty-three billion, two hundred twenty-five million, thirty-six thousand, nine hundred eighty-eight".