11973203927 has 4 divisors (see below), whose sum is σ = 12117459480. Its totient is φ = 11828948376.

The previous prime is 11973203911. The next prime is 11973203939. The reversal of 11973203927 is 72930237911.

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

It is a cyclic number.

It is not a de Polignac number, because 11973203927 - 2⁴ = 11973203911 is a prime.

It is a super-2 number, since 2×11973203927² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11973263927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72127652 + ... + 72127817.

It is an arithmetic number, because the mean of its divisors is an integer number (3029364870).

Almost surely, 2^11973203927 is an apocalyptic number.

11973203927 is a deficient number, since it is larger than the sum of its proper divisors (144255553).

11973203927 is an equidigital number, since it uses as much as digits as its factorization.

11973203927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144255552.

The product of its (nonzero) digits is 142884, while the sum is 44.

The spelling of 11973203927 in words is "eleven billion, nine hundred seventy-three million, two hundred three thousand, nine hundred twenty-seven".