1217042466373 has 4 divisors (see below), whose sum is σ = 1217045209900. Its totient is φ = 1217039722848.

The previous prime is 1217042466337. The next prime is 1217042466379. The reversal of 1217042466373 is 3736642407121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 790735328289 + 426307138084 = 889233^2 + 652922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217042466373 - 2⁹ = 1217042465861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217042466379) by changing a digit.

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, 537048 + ... + 1650001.

It is an arithmetic number, because the mean of its divisors is an integer number (304261302475).

Almost surely, 2^{1217042466373} is an apocalyptic number.

It is an amenable number.

1217042466373 is a deficient number, since it is larger than the sum of its proper divisors (2743527).

1217042466373 is an equidigital number, since it uses as much as digits as its factorization.

1217042466373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743526.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 1217042466373 in words is "one trillion, two hundred seventeen billion, forty-two million, four hundred sixty-six thousand, three hundred seventy-three".