2600320811 has 12 divisors (see below), whose sum is σ = 2904240600. Its totient is φ = 2308934880.

The previous prime is 2600320777. The next prime is 2600320813. The reversal of 2600320811 is 1180230062.

It is a de Polignac number, because none of the positive numbers 2^k-2600320811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2600320813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43586 + ... + 84263.

It is an arithmetic number, because the mean of its divisors is an integer number (242020050).

Almost surely, 2^2600320811 is an apocalyptic number.

2600320811 is a deficient number, since it is larger than the sum of its proper divisors (303919789).

2600320811 is a wasteful number, since it uses less digits than its factorization.

2600320811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127946 (or 127903 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2600320811 is about 50993.3408495658. The cubic root of 2600320811 is about 1375.1254208018.

Adding to 2600320811 its reverse (1180230062), we get a palindrome (3780550873).

The spelling of 2600320811 in words is "two billion, six hundred million, three hundred twenty thousand, eight hundred eleven".