1664582414587 has 2 divisors, whose sum is σ = 1664582414588. Its totient is φ = 1664582414586.

The previous prime is 1664582414569. The next prime is 1664582414609. The reversal of 1664582414587 is 7854142854661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1664582414587 is a prime.

It is a super-2 number, since 2×1664582414587² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1664585414587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832291207293 + 832291207294.

It is an arithmetic number, because the mean of its divisors is an integer number (832291207294).

Almost surely, 2^{1664582414587} is an apocalyptic number.

1664582414587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664582414587 is an equidigital number, since it uses as much as digits as its factorization.

1664582414587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51609600, while the sum is 61.

The spelling of 1664582414587 in words is "one trillion, six hundred sixty-four billion, five hundred eighty-two million, four hundred fourteen thousand, five hundred eighty-seven".