65506325231629 has 2 divisors, whose sum is σ = 65506325231630. Its totient is φ = 65506325231628.

The previous prime is 65506325231617. The next prime is 65506325231651. The reversal of 65506325231629 is 92613252360556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61176222039529 + 4330103192100 = 7821523^2 + 2080890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65506325231629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65506325231629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65506325231689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32753162615814 + 32753162615815.

It is an arithmetic number, because the mean of its divisors is an integer number (32753162615815).

Almost surely, 2^{65506325231629} is an apocalyptic number.

It is an amenable number.

65506325231629 is a deficient number, since it is larger than the sum of its proper divisors (1).

65506325231629 is an equidigital number, since it uses as much as digits as its factorization.

65506325231629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496000, while the sum is 55.

The spelling of 65506325231629 in words is "sixty-five trillion, five hundred six billion, three hundred twenty-five million, two hundred thirty-one thousand, six hundred twenty-nine".