11861738959 has 8 divisors (see below), whose sum is σ = 13637449728. Its totient is φ = 10106322360.

The previous prime is 11861738939. The next prime is 11861738989. The reversal of 11861738959 is 95983716811.

11861738959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11861738959 - 2⁵ = 11861738927 is a prime.

It is a super-2 number, since 2×11861738959² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861738939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5072287 + ... + 5074624.

It is an arithmetic number, because the mean of its divisors is an integer number (1704681216).

Almost surely, 2^11861738959 is an apocalyptic number.

11861738959 is a deficient number, since it is larger than the sum of its proper divisors (1775710769).

11861738959 is a wasteful number, since it uses less digits than its factorization.

11861738959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10147085.

The product of its digits is 3265920, while the sum is 58.

The spelling of 11861738959 in words is "eleven billion, eight hundred sixty-one million, seven hundred thirty-eight thousand, nine hundred fifty-nine".