11139399936 has 252 divisors, whose sum is σ = 38104673152. Its totient is φ = 3182312448.

The previous prime is 11139399917. The next prime is 11139399941. The reversal of 11139399936 is 63999393111.

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1302105 + ... + 1310631.

Almost surely, 2^11139399936 is an apocalyptic number.

11139399936 is a gapful number since it is divisible by the number (16) 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 11139399936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19052336576).

11139399936 is an abundant number, since it is smaller than the sum of its proper divisors (26965273216).

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

11139399936 is an frugal number, since it uses more digits than its factorization.

11139399936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8568 (or 8539 counting only the distinct ones).

The product of its digits is 1062882, while the sum is 54.

It can be divided in two parts, 1113 and 9399936, that added together give a palindrome (9401049).

The spelling of 11139399936 in words is "eleven billion, one hundred thirty-nine million, three hundred ninety-nine thousand, nine hundred thirty-six".