11916069538 has 4 divisors (see below), whose sum is σ = 17874104310. Its totient is φ = 5958034768.

The previous prime is 11916069479. The next prime is 11916069569. The reversal of 11916069538 is 83596061911.

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

It can be written as a sum of positive squares in only one way, i.e., 11112743889 + 803325649 = 105417^2 + 28343^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11916069491 and 11916069500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2979017383 + ... + 2979017386.

Almost surely, 2^11916069538 is an apocalyptic number.

11916069538 is a deficient number, since it is larger than the sum of its proper divisors (5958034772).

11916069538 is an equidigital number, since it uses as much as digits as its factorization.

11916069538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958034771.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 11916069538 in words is "eleven billion, nine hundred sixteen million, sixty-nine thousand, five hundred thirty-eight".