11139399937 has 4 divisors (see below), whose sum is σ = 11139824340. Its totient is φ = 11138975536.

The previous prime is 11139399917. The next prime is 11139399941. The reversal of 11139399937 is 73999393111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4189843441 + 6949556496 = 64729^2 + 83364^2 .

It is a cyclic number.

It is not a de Polignac number, because 11139399937 - 2⁷ = 11139399809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11139399917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170038 + ... + 226255.

It is an arithmetic number, because the mean of its divisors is an integer number (2784956085).

Almost surely, 2^11139399937 is an apocalyptic number.

It is an amenable number.

11139399937 is a deficient number, since it is larger than the sum of its proper divisors (424403).

11139399937 is an equidigital number, since it uses as much as digits as its factorization.

11139399937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424402.

The product of its digits is 1240029, while the sum is 55.

The spelling of 11139399937 in words is "eleven billion, one hundred thirty-nine million, three hundred ninety-nine thousand, nine hundred thirty-seven".