11501223455 has 16 divisors (see below), whose sum is σ = 13918716000. Its totient is φ = 9123112320.

The previous prime is 11501223443. The next prime is 11501223491. The reversal of 11501223455 is 55432210511.

It is a de Polignac number, because none of the positive numbers 2^k-11501223455 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293945 + ... + 330765.

It is an arithmetic number, because the mean of its divisors is an integer number (869919750).

Almost surely, 2^11501223455 is an apocalyptic number.

11501223455 is a deficient number, since it is larger than the sum of its proper divisors (2417492545).

11501223455 is a wasteful number, since it uses less digits than its factorization.

11501223455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37354.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 11501223455 its reverse (55432210511), we get a palindrome (66933433966).

The spelling of 11501223455 in words is "eleven billion, five hundred one million, two hundred twenty-three thousand, four hundred fifty-five".