1217030485665 has 16 divisors (see below), whose sum is σ = 1948881034368. Its totient is φ = 648538839936.

The previous prime is 1217030485661. The next prime is 1217030485667. The reversal of 1217030485665 is 5665840307121.

It is not a de Polignac number, because 1217030485665 - 2² = 1217030485661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1217030485661) 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, 33986869 + ... + 34022658.

It is an arithmetic number, because the mean of its divisors is an integer number (121805064648).

Almost surely, 2^{1217030485665} is an apocalyptic number.

1217030485665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1217030485665 is a deficient number, since it is larger than the sum of its proper divisors (731850548703).

1217030485665 is a wasteful number, since it uses less digits than its factorization.

1217030485665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68010728.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 1217030485665 in words is "one trillion, two hundred seventeen billion, thirty million, four hundred eighty-five thousand, six hundred sixty-five".