11901286911 has 32 divisors (see below), whose sum is σ = 17554526208. Its totient is φ = 7145867520.

The previous prime is 11901286847. The next prime is 11901286921. The reversal of 11901286911 is 11968210911.

It is not a de Polignac number, because 11901286911 - 2⁶ = 11901286847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11901286911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11901286921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3955 + ... + 154331.

It is an arithmetic number, because the mean of its divisors is an integer number (548578944).

Almost surely, 2^11901286911 is an apocalyptic number.

11901286911 is a deficient number, since it is larger than the sum of its proper divisors (5653239297).

11901286911 is a wasteful number, since it uses less digits than its factorization.

11901286911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150471.

The product of its (nonzero) digits is 7776, while the sum is 39.

The spelling of 11901286911 in words is "eleven billion, nine hundred one million, two hundred eighty-six thousand, nine hundred eleven".