11927405951909 has 8 divisors (see below), whose sum is σ = 13631341996608. Its totient is φ = 10223475134400.

The previous prime is 11927405951897. The next prime is 11927405951911. The reversal of 11927405951909 is 90915950472911.

It is a happy number.

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 11927405951909 - 2⁸ = 11927405951653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11927405951939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8032109 + ... + 9400509.

It is an arithmetic number, because the mean of its divisors is an integer number (1703917749576).

Almost surely, 2^{11927405951909} is an apocalyptic number.

It is an amenable number.

11927405951909 is a deficient number, since it is larger than the sum of its proper divisors (1703936044699).

11927405951909 is a wasteful number, since it uses less digits than its factorization.

11927405951909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613595.

The product of its (nonzero) digits is 9185400, while the sum is 62.

The spelling of 11927405951909 in words is "eleven trillion, nine hundred twenty-seven billion, four hundred five million, nine hundred fifty-one thousand, nine hundred nine".