53051688428209 has 2 divisors, whose sum is σ = 53051688428210. Its totient is φ = 53051688428208.

The previous prime is 53051688428171. The next prime is 53051688428213. The reversal of 53051688428209 is 90282488615035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38233446222400 + 14818242205809 = 6183320^2 + 3849447^2 .

It is a cyclic number.

It is not a de Polignac number, because 53051688428209 - 2²¹ = 53051686331057 is a prime.

It is not a weakly prime, because it can be changed into another prime (53051688428509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26525844214104 + 26525844214105.

It is an arithmetic number, because the mean of its divisors is an integer number (26525844214105).

Almost surely, 2^{53051688428209} is an apocalyptic number.

It is an amenable number.

53051688428209 is a deficient number, since it is larger than the sum of its proper divisors (1).

53051688428209 is an equidigital number, since it uses as much as digits as its factorization.

53051688428209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33177600, while the sum is 61.

The spelling of 53051688428209 in words is "fifty-three trillion, fifty-one billion, six hundred eighty-eight million, four hundred twenty-eight thousand, two hundred nine".