51602423624621 has 2 divisors, whose sum is σ = 51602423624622. Its totient is φ = 51602423624620.

The previous prime is 51602423624603. The next prime is 51602423624659. The reversal of 51602423624621 is 12642632420615.

It is a happy number.

51602423624621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47704507854025 + 3897915770596 = 6906845^2 + 1974314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51602423624621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51602423624671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25801211812310 + 25801211812311.

It is an arithmetic number, because the mean of its divisors is an integer number (25801211812311).

Almost surely, 2^{51602423624621} is an apocalyptic number.

It is an amenable number.

51602423624621 is a deficient number, since it is larger than the sum of its proper divisors (1).

51602423624621 is an equidigital number, since it uses as much as digits as its factorization.

51602423624621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 51602423624621 in words is "fifty-one trillion, six hundred two billion, four hundred twenty-three million, six hundred twenty-four thousand, six hundred twenty-one".