65273738989 has 2 divisors, whose sum is σ = 65273738990. Its totient is φ = 65273738988.

The previous prime is 65273738953. The next prime is 65273739017. The reversal of 65273738989 is 98983737256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51180012900 + 14093726089 = 226230^2 + 118717^2 .

It is a cyclic number.

It is not a de Polignac number, because 65273738989 - 2²⁷ = 65139521261 is a prime.

It is a super-2 number, since 2×65273738989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65273738939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32636869494 + 32636869495.

It is an arithmetic number, because the mean of its divisors is an integer number (32636869495).

Almost surely, 2^65273738989 is an apocalyptic number.

It is an amenable number.

65273738989 is a deficient number, since it is larger than the sum of its proper divisors (1).

65273738989 is an equidigital number, since it uses as much as digits as its factorization.

65273738989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 67.

The spelling of 65273738989 in words is "sixty-five billion, two hundred seventy-three million, seven hundred thirty-eight thousand, nine hundred eighty-nine".