51233406620623 has 2 divisors, whose sum is σ = 51233406620624. Its totient is φ = 51233406620622.

The previous prime is 51233406620597. The next prime is 51233406620713. The reversal of 51233406620623 is 32602660433215.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51233406620623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51233406620623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51233406624623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25616703310311 + 25616703310312.

It is an arithmetic number, because the mean of its divisors is an integer number (25616703310312).

Almost surely, 2^{51233406620623} is an apocalyptic number.

51233406620623 is a deficient number, since it is larger than the sum of its proper divisors (1).

51233406620623 is an equidigital number, since it uses as much as digits as its factorization.

51233406620623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 51233406620623 in words is "fifty-one trillion, two hundred thirty-three billion, four hundred six million, six hundred twenty thousand, six hundred twenty-three".