53506666249 has 2 divisors, whose sum is σ = 53506666250. Its totient is φ = 53506666248.

The previous prime is 53506666237. The next prime is 53506666313. The reversal of 53506666249 is 94266660535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43647566400 + 9859099849 = 208920^2 + 99293^2 .

It is a cyclic number.

It is not a de Polignac number, because 53506666249 - 2²⁹ = 52969795337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53506666196 and 53506666205.

It is not a weakly prime, because it can be changed into another prime (53506696249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26753333124 + 26753333125.

It is an arithmetic number, because the mean of its divisors is an integer number (26753333125).

Almost surely, 2^53506666249 is an apocalyptic number.

It is an amenable number.

53506666249 is a deficient number, since it is larger than the sum of its proper divisors (1).

53506666249 is an equidigital number, since it uses as much as digits as its factorization.

53506666249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 52.

The spelling of 53506666249 in words is "fifty-three billion, five hundred six million, six hundred sixty-six thousand, two hundred forty-nine".