11154455215 has 16 divisors (see below), whose sum is σ = 13591452672. Its totient is φ = 8787160864.

The previous prime is 11154455189. The next prime is 11154455239. The reversal of 11154455215 is 51255445111.

It is a cyclic number.

It is not a de Polignac number, because 11154455215 - 2⁵ = 11154455183 is a prime.

It is a super-2 number, since 2×11154455215² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 26922 + ... + 151768.

It is an arithmetic number, because the mean of its divisors is an integer number (849465792).

Almost surely, 2^11154455215 is an apocalyptic number.

11154455215 is a deficient number, since it is larger than the sum of its proper divisors (2436997457).

11154455215 is a wasteful number, since it uses less digits than its factorization.

11154455215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125126.

The product of its digits is 20000, while the sum is 34.

The spelling of 11154455215 in words is "eleven billion, one hundred fifty-four million, four hundred fifty-five thousand, two hundred fifteen".