1217703422016 has 63 divisors (see below), whose sum is σ = 3490402909071. Its totient is φ = 405892312704.

The previous prime is 1217703421999. The next prime is 1217703422021. The reversal of 1217703422016 is 6102243077121.

The square root of 1217703422016 is 1103496.

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

1217703422016 is a `hidden beast` number, since 1 + 217 + 7 + 0 + 3 + 422 + 0 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26460915 + ... + 26506893.

Almost surely, 2^{1217703422016} is an apocalyptic number.

1217703422016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1217703422016 is the 1103496-th square number.

It is an amenable number.

1217703422016 is an abundant number, since it is smaller than the sum of its proper divisors (2272699487055).

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

1217703422016 is an frugal number, since it uses more digits than its factorization.

1217703422016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91976 (or 45984 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

Multiplying 1217703422016 by its sum of digits (36), we get a square (43837323192576 = 6620976²).

1217703422016 divided by its sum of digits (36) gives a square (33825095056 = 183916²).

Adding to 1217703422016 its reverse (6102243077121), we get a palindrome (7319946499137).

The spelling of 1217703422016 in words is "one trillion, two hundred seventeen billion, seven hundred three million, four hundred twenty-two thousand, sixteen".