65839628461 has 2 divisors, whose sum is σ = 65839628462. Its totient is φ = 65839628460.

The previous prime is 65839628383. The next prime is 65839628537. The reversal of 65839628461 is 16482693856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65750703561 + 88924900 = 256419^2 + 9430^2 .

It is a cyclic number.

It is not a de Polignac number, because 65839628461 - 2¹⁵ = 65839595693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65839628396 and 65839628405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65839628861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32919814230 + 32919814231.

It is an arithmetic number, because the mean of its divisors is an integer number (32919814231).

Almost surely, 2^65839628461 is an apocalyptic number.

It is an amenable number.

65839628461 is a deficient number, since it is larger than the sum of its proper divisors (1).

65839628461 is an equidigital number, since it uses as much as digits as its factorization.

65839628461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 58.

The spelling of 65839628461 in words is "sixty-five billion, eight hundred thirty-nine million, six hundred twenty-eight thousand, four hundred sixty-one".