11023155551555 has 48 divisors (see below), whose sum is σ = 15956733124800. Its totient is φ = 7283042097408.

The previous prime is 11023155551531. The next prime is 11023155551623. The reversal of 11023155551555 is 55515555132011.

It is a happy number.

It is not a de Polignac number, because 11023155551555 - 2¹⁶ = 11023155486019 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 47 ways as a sum of consecutive naturals, for example, 4969280 + ... + 6836669.

It is an arithmetic number, because the mean of its divisors is an integer number (332431940100).

Almost surely, 2^{11023155551555} is an apocalyptic number.

11023155551555 is a deficient number, since it is larger than the sum of its proper divisors (4933577573245).

11023155551555 is a wasteful number, since it uses less digits than its factorization.

11023155551555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11806108 (or 11806101 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 44.

The spelling of 11023155551555 in words is "eleven trillion, twenty-three billion, one hundred fifty-five million, five hundred fifty-one thousand, five hundred fifty-five".