1320640005005 has 8 divisors (see below), whose sum is σ = 1587467784672. Its totient is φ = 1054712151568.

The previous prime is 1320640004987. The next prime is 1320640005011. The reversal of 1320640005005 is 5005000460231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320640005005 - 2¹² = 1320640000909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224978327 + ... + 224984196.

It is an arithmetic number, because the mean of its divisors is an integer number (198433473084).

Almost surely, 2^{1320640005005} is an apocalyptic number.

It is an amenable number.

1320640005005 is a deficient number, since it is larger than the sum of its proper divisors (266827779667).

1320640005005 is an equidigital number, since it uses as much as digits as its factorization.

1320640005005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449963115.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 1320640005005 its reverse (5005000460231), we get a palindrome (6325640465236).

The spelling of 1320640005005 in words is "one trillion, three hundred twenty billion, six hundred forty million, five thousand, five".