11555012433426 has 96 divisors (see below), whose sum is σ = 30009031227648. Its totient is φ = 2931504176160.

The previous prime is 11555012433421. The next prime is 11555012433439. The reversal of 11555012433426 is 62433421055511.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11555012433421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41407200 + ... + 41685323.

It is an arithmetic number, because the mean of its divisors is an integer number (312594075288).

Almost surely, 2^{11555012433426} is an apocalyptic number.

11555012433426 is an abundant number, since it is smaller than the sum of its proper divisors (18454018794222).

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

11555012433426 is a wasteful number, since it uses less digits than its factorization.

11555012433426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83092596 (or 83092589 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 11555012433426 its reverse (62433421055511), we get a palindrome (73988433488937).

The spelling of 11555012433426 in words is "eleven trillion, five hundred fifty-five billion, twelve million, four hundred thirty-three thousand, four hundred twenty-six".