51900648823 has 2 divisors, whose sum is σ = 51900648824. Its totient is φ = 51900648822.

The previous prime is 51900648809. The next prime is 51900648853. The reversal of 51900648823 is 32884600915.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51900648823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51900648853) 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, 25950324411 + 25950324412.

It is an arithmetic number, because the mean of its divisors is an integer number (25950324412).

Almost surely, 2^51900648823 is an apocalyptic number.

51900648823 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900648823 is an equidigital number, since it uses as much as digits as its factorization.

51900648823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 51900648823 in words is "fifty-one billion, nine hundred million, six hundred forty-eight thousand, eight hundred twenty-three".