12012540376481 has 2 divisors, whose sum is σ = 12012540376482. Its totient is φ = 12012540376480.

The previous prime is 12012540376457. The next prime is 12012540376547. The reversal of 12012540376481 is 18467304521021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11765174401600 + 247365974881 = 3430040^2 + 497359^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012540376481 - 2³⁴ = 11995360507297 is a prime.

It is a super-2 number, since 2×12012540376481² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12012540376411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006270188240 + 6006270188241.

It is an arithmetic number, because the mean of its divisors is an integer number (6006270188241).

Almost surely, 2^{12012540376481} is an apocalyptic number.

It is an amenable number.

12012540376481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012540376481 is an equidigital number, since it uses as much as digits as its factorization.

12012540376481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 12012540376481 in words is "twelve trillion, twelve billion, five hundred forty million, three hundred seventy-six thousand, four hundred eighty-one".