1216706311075 has 12 divisors (see below), whose sum is σ = 1597463816040. Its totient is φ = 916108280960.

The previous prime is 1216706311069. The next prime is 1216706311081. The reversal of 1216706311075 is 5701136076121.

It is an interprime number because it is at equal distance from previous prime (1216706311069) and next prime (1216706311081).

It is not a de Polignac number, because 1216706311075 - 2¹⁷ = 1216706180003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1431418765 + ... + 1431419614.

It is an arithmetic number, because the mean of its divisors is an integer number (133121984670).

Almost surely, 2^{1216706311075} is an apocalyptic number.

1216706311075 is a deficient number, since it is larger than the sum of its proper divisors (380757504965).

1216706311075 is a wasteful number, since it uses less digits than its factorization.

1216706311075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862838406 (or 2862838401 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 1216706311075 in words is "one trillion, two hundred sixteen billion, seven hundred six million, three hundred eleven thousand, seventy-five".