11619138688 has 64 divisors (see below), whose sum is σ = 23355217440. Its totient is φ = 5757696000.

The previous prime is 11619138683. The next prime is 11619138731. The reversal of 11619138688 is 88683191611.

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

It is a super-2 number, since 2×11619138688² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11619138683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7588483 + ... + 7590013.

Almost surely, 2^11619138688 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 11619138688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11677608720).

11619138688 is an abundant number, since it is smaller than the sum of its proper divisors (11736078752).

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

11619138688 is a wasteful number, since it uses less digits than its factorization.

11619138688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2025 counting only the distinct ones).

The product of its digits is 497664, while the sum is 52.

The spelling of 11619138688 in words is "eleven billion, six hundred nineteen million, one hundred thirty-eight thousand, six hundred eighty-eight".