2521116345 has 32 divisors (see below), whose sum is σ = 4441651200. Its totient is φ = 1210927040.

The previous prime is 2521116341. The next prime is 2521116379. The reversal of 2521116345 is 5436111252.

2521116345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521116345 - 2² = 2521116341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2521116341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53745 + ... + 89054.

It is an arithmetic number, because the mean of its divisors is an integer number (138801600).

Almost surely, 2^2521116345 is an apocalyptic number.

It is an amenable number.

2521116345 is a deficient number, since it is larger than the sum of its proper divisors (1920534855).

2521116345 is a wasteful number, since it uses less digits than its factorization.

2521116345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142925.

The product of its digits is 7200, while the sum is 30.

The square root of 2521116345 is about 50210.7194232467. The cubic root of 2521116345 is about 1361.0193383460.

Adding to 2521116345 its reverse (5436111252), we get a palindrome (7957227597).

The spelling of 2521116345 in words is "two billion, five hundred twenty-one million, one hundred sixteen thousand, three hundred forty-five".