11138664064 has 64 divisors (see below), whose sum is σ = 24988596480. Its totient is φ = 4899686400.

The previous prime is 11138664059. The next prime is 11138664073. The reversal of 11138664064 is 46046683111.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83949 + ... + 171244.

It is an arithmetic number, because the mean of its divisors is an integer number (390446820).

Almost surely, 2^11138664064 is an apocalyptic number.

It is an amenable number.

11138664064 is an abundant number, since it is smaller than the sum of its proper divisors (13849932416).

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

11138664064 is a wasteful number, since it uses less digits than its factorization.

11138664064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255249 (or 255237 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 11138664064 in words is "eleven billion, one hundred thirty-eight million, six hundred sixty-four thousand, sixty-four".