65047619557 has 2 divisors, whose sum is σ = 65047619558. Its totient is φ = 65047619556.

The previous prime is 65047619489. The next prime is 65047619569. The reversal of 65047619557 is 75591674056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33211782081 + 31835837476 = 182241^2 + 178426^2 .

It is a cyclic number.

It is not a de Polignac number, because 65047619557 - 2²⁷ = 64913401829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65047619498 and 65047619507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65047619657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32523809778 + 32523809779.

It is an arithmetic number, because the mean of its divisors is an integer number (32523809779).

Almost surely, 2^65047619557 is an apocalyptic number.

It is an amenable number.

65047619557 is a deficient number, since it is larger than the sum of its proper divisors (1).

65047619557 is an equidigital number, since it uses as much as digits as its factorization.

65047619557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 65047619557 in words is "sixty-five billion, forty-seven million, six hundred nineteen thousand, five hundred fifty-seven".