11987734487041 has 2 divisors, whose sum is σ = 11987734487042. Its totient is φ = 11987734487040.

The previous prime is 11987734487011. The next prime is 11987734487089. The reversal of 11987734487041 is 14078443778911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11979358576641 + 8375910400 = 3461121^2 + 91520^2 .

It is a cyclic number.

It is not a de Polignac number, because 11987734487041 - 2⁹ = 11987734486529 is a prime.

It is not a weakly prime, because it can be changed into another prime (11987734487011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5993867243520 + 5993867243521.

It is an arithmetic number, because the mean of its divisors is an integer number (5993867243521).

Almost surely, 2^{11987734487041} is an apocalyptic number.

It is an amenable number.

11987734487041 is a deficient number, since it is larger than the sum of its proper divisors (1).

11987734487041 is an equidigital number, since it uses as much as digits as its factorization.

11987734487041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 11987734487041 in words is "eleven trillion, nine hundred eighty-seven billion, seven hundred thirty-four million, four hundred eighty-seven thousand, forty-one".