1316233611556 has 48 divisors (see below), whose sum is σ = 2342586561840. Its totient is φ = 647024371200.

The previous prime is 1316233611509. The next prime is 1316233611559. The reversal of 1316233611556 is 6551163326131.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 289626948900 + 1026606662656 = 538170^2 + 1013216^2 .

It is a super-2 number, since 2×1316233611556² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316233611559) by changing a digit.

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, 57929110 + ... + 57951826.

It is an arithmetic number, because the mean of its divisors is an integer number (48803886705).

Almost surely, 2^{1316233611556} is an apocalyptic number.

It is an amenable number.

1316233611556 is a deficient number, since it is larger than the sum of its proper divisors (1026352950284).

1316233611556 is a wasteful number, since it uses less digits than its factorization.

1316233611556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23824 (or 23822 counting only the distinct ones).

The product of its digits is 291600, while the sum is 43.

Adding to 1316233611556 its reverse (6551163326131), we get a palindrome (7867396937687).

The spelling of 1316233611556 in words is "one trillion, three hundred sixteen billion, two hundred thirty-three million, six hundred eleven thousand, five hundred fifty-six".