65571051670513 has 2 divisors, whose sum is σ = 65571051670514. Its totient is φ = 65571051670512.

The previous prime is 65571051670459. The next prime is 65571051670541. The reversal of 65571051670513 is 31507615017556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46788431802849 + 18782619867664 = 6840207^2 + 4333892^2 .

It is a cyclic number.

It is not a de Polignac number, because 65571051670513 - 2¹³ = 65571051662321 is a prime.

It is not a weakly prime, because it can be changed into another prime (65571051670213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32785525835256 + 32785525835257.

It is an arithmetic number, because the mean of its divisors is an integer number (32785525835257).

Almost surely, 2^{65571051670513} is an apocalyptic number.

It is an amenable number.

65571051670513 is a deficient number, since it is larger than the sum of its proper divisors (1).

65571051670513 is an equidigital number, since it uses as much as digits as its factorization.

65571051670513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3307500, while the sum is 52.

The spelling of 65571051670513 in words is "sixty-five trillion, five hundred seventy-one billion, fifty-one million, six hundred seventy thousand, five hundred thirteen".