1664011412587 has 2 divisors, whose sum is σ = 1664011412588. Its totient is φ = 1664011412586.

The previous prime is 1664011412537. The next prime is 1664011412629. The reversal of 1664011412587 is 7852141104661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1664011412587 - 2¹¹ = 1664011410539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1664011412537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832005706293 + 832005706294.

It is an arithmetic number, because the mean of its divisors is an integer number (832005706294).

Almost surely, 2^{1664011412587} is an apocalyptic number.

1664011412587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664011412587 is an equidigital number, since it uses as much as digits as its factorization.

1664011412587 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 46.

The spelling of 1664011412587 in words is "one trillion, six hundred sixty-four billion, eleven million, four hundred twelve thousand, five hundred eighty-seven".