51723100823 has 2 divisors, whose sum is σ = 51723100824. Its totient is φ = 51723100822.

The previous prime is 51723100783. The next prime is 51723100867. The reversal of 51723100823 is 32800132715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51723100823 - 2¹² = 51723096727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51723100823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51723100883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25861550411 + 25861550412.

It is an arithmetic number, because the mean of its divisors is an integer number (25861550412).

Almost surely, 2^51723100823 is an apocalyptic number.

51723100823 is a deficient number, since it is larger than the sum of its proper divisors (1).

51723100823 is an equidigital number, since it uses as much as digits as its factorization.

51723100823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 51723100823 in words is "fifty-one billion, seven hundred twenty-three million, one hundred thousand, eight hundred twenty-three".