2511220613 has 24 divisors (see below), whose sum is σ = 2823877728. Its totient is φ = 2213900000.

The previous prime is 2511220567. The next prime is 2511220697. The reversal of 2511220613 is 3160221152.

It is not a de Polignac number, because 2511220613 - 2¹⁰ = 2511219589 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2511220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10004738 + ... + 10004988.

It is an arithmetic number, because the mean of its divisors is an integer number (117661572).

Almost surely, 2^2511220613 is an apocalyptic number.

It is an amenable number.

2511220613 is a deficient number, since it is larger than the sum of its proper divisors (312657115).

2511220613 is a wasteful number, since it uses less digits than its factorization.

2511220613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2511220613 is about 50112.0805095937. The cubic root of 2511220613 is about 1359.2362733690.

Adding to 2511220613 its reverse (3160221152), we get a palindrome (5671441765).

The spelling of 2511220613 in words is "two billion, five hundred eleven million, two hundred twenty thousand, six hundred thirteen".