1216457871304 has 16 divisors (see below), whose sum is σ = 2456309163420. Its totient is φ = 561442094400.

The previous prime is 1216457871281. The next prime is 1216457871401. The reversal of 1216457871304 is 4031787546121.

It can be written as a sum of positive squares in 2 ways, for example, as 1172694068100 + 43763803204 = 1082910^2 + 209198^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5848355047 + ... + 5848355254.

Almost surely, 2^{1216457871304} is an apocalyptic number.

It is an amenable number.

1216457871304 is an abundant number, since it is smaller than the sum of its proper divisors (1239851292116).

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

1216457871304 is a wasteful number, since it uses less digits than its factorization.

1216457871304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696710320 (or 11696710316 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 1216457871304 in words is "one trillion, two hundred sixteen billion, four hundred fifty-seven million, eight hundred seventy-one thousand, three hundred four".