11213775211555 has 32 divisors (see below), whose sum is σ = 16188614760960. Its totient is φ = 7284599723520.

The previous prime is 11213775211519. The next prime is 11213775211567. The reversal of 11213775211555 is 55511257731211.

It is not a de Polignac number, because 11213775211555 - 2⁷ = 11213775211427 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 43993675 + ... + 44247835.

It is an arithmetic number, because the mean of its divisors is an integer number (505894211280).

Almost surely, 2^{11213775211555} is an apocalyptic number.

11213775211555 is a deficient number, since it is larger than the sum of its proper divisors (4974839549405).

11213775211555 is a wasteful number, since it uses less digits than its factorization.

11213775211555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320539.

The product of its digits is 367500, while the sum is 46.

The spelling of 11213775211555 in words is "eleven trillion, two hundred thirteen billion, seven hundred seventy-five million, two hundred eleven thousand, five hundred fifty-five".