11139400000 has 84 divisors (see below), whose sum is σ = 27629661276. Its totient is φ = 4455680000.

The previous prime is 11139399961. The next prime is 11139400049. The reversal of 11139400000 is 493111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5194373184 + 5945026816 = 72072^2 + 77104^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172152 + ... + 227848.

It is an arithmetic number, because the mean of its divisors is an integer number (328924539).

Almost surely, 2^11139400000 is an apocalyptic number.

11139400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11139400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13814830638).

11139400000 is an abundant number, since it is smaller than the sum of its proper divisors (16490261276).

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

11139400000 is an frugal number, since it uses more digits than its factorization.

11139400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55734 (or 55704 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11139400000 its reverse (493111), we get a palindrome (11139893111).

The spelling of 11139400000 in words is "eleven billion, one hundred thirty-nine million, four hundred thousand".