655629931273 has 2 divisors, whose sum is σ = 655629931274. Its totient is φ = 655629931272.

The previous prime is 655629931259. The next prime is 655629931279. The reversal of 655629931273 is 372139926556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636234355449 + 19395575824 = 797643^2 + 139268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655629931273 is a prime.

It is not a weakly prime, because it can be changed into another prime (655629931279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327814965636 + 327814965637.

It is an arithmetic number, because the mean of its divisors is an integer number (327814965637).

Almost surely, 2^655629931273 is an apocalyptic number.

It is an amenable number.

655629931273 is a deficient number, since it is larger than the sum of its proper divisors (1).

655629931273 is an equidigital number, since it uses as much as digits as its factorization.

655629931273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18370800, while the sum is 58.

The spelling of 655629931273 in words is "six hundred fifty-five billion, six hundred twenty-nine million, nine hundred thirty-one thousand, two hundred seventy-three".