11388388064 has 48 divisors (see below), whose sum is σ = 23119202736. Its totient is φ = 5518080000.

The previous prime is 11388388013. The next prime is 11388388103. The reversal of 11388388064 is 46088388311.

It is a congruent number.

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, 278024 + ... + 316344.

It is an arithmetic number, because the mean of its divisors is an integer number (481650057).

Almost surely, 2^11388388064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11388388064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11559601368).

11388388064 is an abundant number, since it is smaller than the sum of its proper divisors (11730814672).

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

11388388064 is a wasteful number, since it uses less digits than its factorization.

11388388064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38619 (or 38611 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 11388388064 in words is "eleven billion, three hundred eighty-eight million, three hundred eighty-eight thousand, sixty-four".