1216302679448 has 8 divisors (see below), whose sum is σ = 2280567523980. Its totient is φ = 608151339720.

The previous prime is 1216302679441. The next prime is 1216302679453. The reversal of 1216302679448 is 8449762036121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1216302679448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216302679441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76018917458 + ... + 76018917473.

Almost surely, 2^{1216302679448} is an apocalyptic number.

It is an amenable number.

1216302679448 is a deficient number, since it is larger than the sum of its proper divisors (1064264844532).

1216302679448 is a wasteful number, since it uses less digits than its factorization.

1216302679448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152037834937 (or 152037834933 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 1216302679448 in words is "one trillion, two hundred sixteen billion, three hundred two million, six hundred seventy-nine thousand, four hundred forty-eight".