999145541939 has 2 divisors, whose sum is σ = 999145541940. Its totient is φ = 999145541938.

The previous prime is 999145541923. The next prime is 999145541957. The reversal of 999145541939 is 939145541999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999145541939 - 2⁴ = 999145541923 is a prime.

It is not a weakly prime, because it can be changed into another prime (999145541959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499572770969 + 499572770970.

It is an arithmetic number, because the mean of its divisors is an integer number (499572770970).

Almost surely, 2^999145541939 is an apocalyptic number.

999145541939 is a deficient number, since it is larger than the sum of its proper divisors (1).

999145541939 is an equidigital number, since it uses as much as digits as its factorization.

999145541939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70858800, while the sum is 68.

The spelling of 999145541939 in words is "nine hundred ninety-nine billion, one hundred forty-five million, five hundred forty-one thousand, nine hundred thirty-nine".