11538313426 has 16 divisors (see below), whose sum is σ = 18223155360. Its totient is φ = 5464087200.

The previous prime is 11538313421. The next prime is 11538313441. The reversal of 11538313426 is 62431383511.

It is a super-2 number, since 2×11538313426² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11538313421) 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 7 ways as a sum of consecutive naturals, for example, 115326 + ... + 190726.

It is an arithmetic number, because the mean of its divisors is an integer number (1138947210).

Almost surely, 2^11538313426 is an apocalyptic number.

11538313426 is a deficient number, since it is larger than the sum of its proper divisors (6684841934).

11538313426 is a wasteful number, since it uses less digits than its factorization.

11538313426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79449.

The product of its digits is 51840, while the sum is 37.

Adding to 11538313426 its reverse (62431383511), we get a palindrome (73969696937).

The spelling of 11538313426 in words is "eleven billion, five hundred thirty-eight million, three hundred thirteen thousand, four hundred twenty-six".