2005445000523 has 4 divisors (see below), whose sum is σ = 2673926667368. Its totient is φ = 1336963333680.

The previous prime is 2005445000513. The next prime is 2005445000551. The reversal of 2005445000523 is 3250005445002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2005445000523 - 2⁶ = 2005445000459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005445000513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334240833418 + ... + 334240833423.

It is an arithmetic number, because the mean of its divisors is an integer number (668481666842).

Almost surely, 2^{2005445000523} is an apocalyptic number.

2005445000523 is a deficient number, since it is larger than the sum of its proper divisors (668481666845).

2005445000523 is an equidigital number, since it uses as much as digits as its factorization.

2005445000523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668481666844.

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 2005445000523 in words is "two trillion, five billion, four hundred forty-five million, five hundred twenty-three", and thus it is an aban number.