11971015055 has 8 divisors (see below), whose sum is σ = 14365971744. Its totient is φ = 9576309600.

The previous prime is 11971015013. The next prime is 11971015061. The reversal of 11971015055 is 55051017911.

11971015055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11971015055 - 2¹⁴ = 11970998671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66065 + ... + 168245.

It is an arithmetic number, because the mean of its divisors is an integer number (1795746468).

Almost surely, 2^11971015055 is an apocalyptic number.

11971015055 is a deficient number, since it is larger than the sum of its proper divisors (2394956689).

11971015055 is a wasteful number, since it uses less digits than its factorization.

11971015055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125617.

The product of its (nonzero) digits is 7875, while the sum is 35.

The spelling of 11971015055 in words is "eleven billion, nine hundred seventy-one million, fifteen thousand, fifty-five".