1217297369344 has 81 divisors (see below), whose sum is σ = 2826835147731. Its totient is φ = 521645913600.

The previous prime is 1217297369333. The next prime is 1217297369383. The reversal of 1217297369344 is 4439637927121.

It is a happy number.

The square root of 1217297369344 is 1103312.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 123566019 + ... + 123575869.

Almost surely, 2^{1217297369344} is an apocalyptic number.

1217297369344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1217297369344 is the 1103312-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217297369344

1217297369344 is an abundant number, since it is smaller than the sum of its proper divisors (1609537778387).

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

1217297369344 is an frugal number, since it uses more digits than its factorization.

1217297369344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19732 (or 9860 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 58.

The spelling of 1217297369344 in words is "one trillion, two hundred seventeen billion, two hundred ninety-seven million, three hundred sixty-nine thousand, three hundred forty-four".