1123004656464 has 80 divisors (see below), whose sum is σ = 2945826693120. Its totient is φ = 368588937600.

The previous prime is 1123004656441. The next prime is 1123004656481. The reversal of 1123004656464 is 4646564003211.

It is a super-2 number, since 2×1123004656464² (a number of 25 digits) contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 988189 + ... + 1795139.

It is an arithmetic number, because the mean of its divisors is an integer number (36822833664).

Almost surely, 2^{1123004656464} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123004656464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472913346560).

1123004656464 is an abundant number, since it is smaller than the sum of its proper divisors (1822822036656).

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

1123004656464 is a wasteful number, since it uses less digits than its factorization.

1123004656464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807408 (or 807402 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 1123004656464 its reverse (4646564003211), we get a palindrome (5769568659675).

The spelling of 1123004656464 in words is "one trillion, one hundred twenty-three billion, four million, six hundred fifty-six thousand, four hundred sixty-four".