2005350251545 has 8 divisors (see below), whose sum is σ = 2465113480200. Its totient is φ = 1565151415680.

The previous prime is 2005350251473. The next prime is 2005350251573. The reversal of 2005350251545 is 5451520535002.

It can be written as a sum of positive squares in 4 ways, for example, as 2400706009 + 2002949545536 = 48997^2 + 1415256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2005350251545 - 2²⁵ = 2005316697113 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4891097970 + ... + 4891098379.

It is an arithmetic number, because the mean of its divisors is an integer number (308139185025).

Almost surely, 2^{2005350251545} is an apocalyptic number.

It is an amenable number.

2005350251545 is a deficient number, since it is larger than the sum of its proper divisors (459763228655).

2005350251545 is an equidigital number, since it uses as much as digits as its factorization.

2005350251545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782196395.

The product of its (nonzero) digits is 150000, while the sum is 37.

Adding to 2005350251545 its reverse (5451520535002), we get a palindrome (7456870786547).

The spelling of 2005350251545 in words is "two trillion, five billion, three hundred fifty million, two hundred fifty-one thousand, five hundred forty-five".