2620404544505 has 36 divisors (see below), whose sum is σ = 3571427331108. Its totient is φ = 1844272584000.

The previous prime is 2620404544453. The next prime is 2620404544519. The reversal of 2620404544505 is 5054454040262.

It can be written as a sum of positive squares in 2 ways, for example, as 1891320814009 + 729083730496 = 1375253^2 + 853864^2 .

It is not a de Polignac number, because 2620404544505 - 2¹² = 2620404540409 is a prime.

It is a Duffinian number.

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 35 ways as a sum of consecutive naturals, for example, 1672106 + ... + 2834915.

It is an arithmetic number, because the mean of its divisors is an integer number (99206314753).

Almost surely, 2^{2620404544505} is an apocalyptic number.

It is an amenable number.

2620404544505 is a deficient number, since it is larger than the sum of its proper divisors (951022786603).

2620404544505 is a wasteful number, since it uses less digits than its factorization.

2620404544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507110 (or 4507068 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 2620404544505 its reverse (5054454040262), we get a palindrome (7674858584767).

The spelling of 2620404544505 in words is "two trillion, six hundred twenty billion, four hundred four million, five hundred forty-four thousand, five hundred five".