1999886284801 has 2 divisors, whose sum is σ = 1999886284802. Its totient is φ = 1999886284800.

The previous prime is 1999886284741. The next prime is 1999886284807. The reversal of 1999886284801 is 1084826889991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1988607632400 + 11278652401 = 1410180^2 + 106201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1999886284801 - 2⁹ = 1999886284289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1999886284807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999943142400 + 999943142401.

It is an arithmetic number, because the mean of its divisors is an integer number (999943142401).

Almost surely, 2^{1999886284801} is an apocalyptic number.

It is an amenable number.

1999886284801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999886284801 is an equidigital number, since it uses as much as digits as its factorization.

1999886284801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 143327232, while the sum is 73.

The spelling of 1999886284801 in words is "one trillion, nine hundred ninety-nine billion, eight hundred eighty-six million, two hundred eighty-four thousand, eight hundred one".