11215811068 has 48 divisors (see below), whose sum is σ = 24780672000. Its totient is φ = 4314473280.

The previous prime is 11215811053. The next prime is 11215811069. The reversal of 11215811068 is 86011851211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215811069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206143 + ... + 254806.

It is an arithmetic number, because the mean of its divisors is an integer number (516264000).

Almost surely, 2^11215811068 is an apocalyptic number.

It is an amenable number.

11215811068 is an abundant number, since it is smaller than the sum of its proper divisors (13564860932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11215811068 is a wasteful number, since it uses less digits than its factorization.

11215811068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461050 (or 461048 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 34.

The spelling of 11215811068 in words is "eleven billion, two hundred fifteen million, eight hundred eleven thousand, sixty-eight".