2115020651 has 2 divisors, whose sum is σ = 2115020652. Its totient is φ = 2115020650.

The previous prime is 2115020647. The next prime is 2115020671. The reversal of 2115020651 is 1560205112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2115020651 - 2² = 2115020647 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115020641) 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 as a sum of consecutive naturals, namely, 1057510325 + 1057510326.

It is an arithmetic number, because the mean of its divisors is an integer number (1057510326).

Almost surely, 2^2115020651 is an apocalyptic number.

2115020651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115020651 is an equidigital number, since it uses as much as digits as its factorization.

2115020651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2115020651 is about 45989.3536701702. The cubic root of 2115020651 is about 1283.6251099244.

Adding to 2115020651 its reverse (1560205112), we get a palindrome (3675225763).

The spelling of 2115020651 in words is "two billion, one hundred fifteen million, twenty thousand, six hundred fifty-one".