65647145273 has 2 divisors, whose sum is σ = 65647145274. Its totient is φ = 65647145272.

The previous prime is 65647145269. The next prime is 65647145281. The reversal of 65647145273 is 37254174656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65112749584 + 534395689 = 255172^2 + 23117^2 .

It is a cyclic number.

It is not a de Polignac number, because 65647145273 - 2² = 65647145269 is a prime.

It is not a weakly prime, because it can be changed into another prime (65647165273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32823572636 + 32823572637.

It is an arithmetic number, because the mean of its divisors is an integer number (32823572637).

Almost surely, 2^65647145273 is an apocalyptic number.

It is an amenable number.

65647145273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65647145273 is an equidigital number, since it uses as much as digits as its factorization.

65647145273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 50.

The spelling of 65647145273 in words is "sixty-five billion, six hundred forty-seven million, one hundred forty-five thousand, two hundred seventy-three".