51636216623 has 2 divisors, whose sum is σ = 51636216624. Its totient is φ = 51636216622.

The previous prime is 51636216559. The next prime is 51636216637. The reversal of 51636216623 is 32661263615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51636216623 - 2⁶ = 51636216559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51636216673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25818108311 + 25818108312.

It is an arithmetic number, because the mean of its divisors is an integer number (25818108312).

Almost surely, 2^51636216623 is an apocalyptic number.

51636216623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51636216623 is an equidigital number, since it uses as much as digits as its factorization.

51636216623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The spelling of 51636216623 in words is "fifty-one billion, six hundred thirty-six million, two hundred sixteen thousand, six hundred twenty-three".