2621312705 has 16 divisors (see below), whose sum is σ = 3633393024. Its totient is φ = 1794266880.

The previous prime is 2621312657. The next prime is 2621312719. The reversal of 2621312705 is 5072131262.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2621312705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400837 + ... + 1402706.

It is an arithmetic number, because the mean of its divisors is an integer number (227087064).

Almost surely, 2^2621312705 is an apocalyptic number.

It is an amenable number.

2621312705 is a deficient number, since it is larger than the sum of its proper divisors (1012080319).

2621312705 is a wasteful number, since it uses less digits than its factorization.

2621312705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803576.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2621312705 is about 51198.7568696741. The cubic root of 2621312705 is about 1378.8158828376.

Adding to 2621312705 its reverse (5072131262), we get a palindrome (7693443967).

The spelling of 2621312705 in words is "two billion, six hundred twenty-one million, three hundred twelve thousand, seven hundred five".