12816216220548 has 48 divisors (see below), whose sum is σ = 32212720895936. Its totient is φ = 3942487486080.

The previous prime is 12816216220541. The next prime is 12816216220649. The reversal of 12816216220548 is 84502261261821.

It is a super-2 number, since 2×12816216220548² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12816216220497 and 12816216220506.

It is not an unprimeable number, because it can be changed into a prime (12816216220541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9397558 + ... + 10674573.

Almost surely, 2^{12816216220548} is an apocalyptic number.

It is an amenable number.

12816216220548 is an abundant number, since it is smaller than the sum of its proper divisors (19396504675388).

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

12816216220548 is a wasteful number, since it uses less digits than its factorization.

12816216220548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20076244 (or 20076242 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 12816216220548 in words is "twelve trillion, eight hundred sixteen billion, two hundred sixteen million, two hundred twenty thousand, five hundred forty-eight".