12087934427 has 2 divisors, whose sum is σ = 12087934428. Its totient is φ = 12087934426.

The previous prime is 12087934421. The next prime is 12087934471. The reversal of 12087934427 is 72443978021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12087934427 - 2⁶ = 12087934363 is a prime.

It is a super-2 number, since 2×12087934427² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12087934421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6043967213 + 6043967214.

It is an arithmetic number, because the mean of its divisors is an integer number (6043967214).

Almost surely, 2^12087934427 is an apocalyptic number.

12087934427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12087934427 is an equidigital number, since it uses as much as digits as its factorization.

12087934427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 12087934427 in words is "twelve billion, eighty-seven million, nine hundred thirty-four thousand, four hundred twenty-seven".