2126351651 has 2 divisors, whose sum is σ = 2126351652. Its totient is φ = 2126351650.

The previous prime is 2126351641. The next prime is 2126351671. The reversal of 2126351651 is 1561536212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126351651 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126351641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063175825 + 1063175826.

It is an arithmetic number, because the mean of its divisors is an integer number (1063175826).

Almost surely, 2^2126351651 is an apocalyptic number.

2126351651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126351651 is an equidigital number, since it uses as much as digits as its factorization.

2126351651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 2126351651 is about 46112.3806694037. The cubic root of 2126351651 is about 1285.9133238554.

Adding to 2126351651 its reverse (1561536212), we get a palindrome (3687887863).

The spelling of 2126351651 in words is "two billion, one hundred twenty-six million, three hundred fifty-one thousand, six hundred fifty-one".