1980146545211 has 2 divisors, whose sum is σ = 1980146545212. Its totient is φ = 1980146545210.

The previous prime is 1980146545207. The next prime is 1980146545259. The reversal of 1980146545211 is 1125456410891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980146545211 - 2² = 1980146545207 is a prime.

It is a super-2 number, since 2×1980146545211² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1980146545271) 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, 990073272605 + 990073272606.

It is an arithmetic number, because the mean of its divisors is an integer number (990073272606).

Almost surely, 2^{1980146545211} is an apocalyptic number.

1980146545211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980146545211 is an equidigital number, since it uses as much as digits as its factorization.

1980146545211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 47.

The spelling of 1980146545211 in words is "one trillion, nine hundred eighty billion, one hundred forty-six million, five hundred forty-five thousand, two hundred eleven".