1206206985587 has 2 divisors, whose sum is σ = 1206206985588. Its totient is φ = 1206206985586.

The previous prime is 1206206985569. The next prime is 1206206985601. The reversal of 1206206985587 is 7855896026021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1206206985587 - 2¹⁸ = 1206206723443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1206206982587) 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, 603103492793 + 603103492794.

It is an arithmetic number, because the mean of its divisors is an integer number (603103492794).

Almost surely, 2^{1206206985587} is an apocalyptic number.

1206206985587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206206985587 is an equidigital number, since it uses as much as digits as its factorization.

1206206985587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 1206206985587 in words is "one trillion, two hundred six billion, two hundred six million, nine hundred eighty-five thousand, five hundred eighty-seven".