2020166555579 has 2 divisors, whose sum is σ = 2020166555580. Its totient is φ = 2020166555578.

The previous prime is 2020166555557. The next prime is 2020166555587. The reversal of 2020166555579 is 9755556610202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020166555579 is a prime.

It is a super-3 number, since 3×2020166555579³ (a number of 38 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020166555579.

It is not a weakly prime, because it can be changed into another prime (2020168555579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010083277789 + 1010083277790.

It is an arithmetic number, because the mean of its divisors is an integer number (1010083277790).

Almost surely, 2^{2020166555579} is an apocalyptic number.

2020166555579 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020166555579 is an equidigital number, since it uses as much as digits as its factorization.

2020166555579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 2020166555579 in words is "two trillion, twenty billion, one hundred sixty-six million, five hundred fifty-five thousand, five hundred seventy-nine".