647395213253 has 2 divisors, whose sum is σ = 647395213254. Its totient is φ = 647395213252.

The previous prime is 647395213163. The next prime is 647395213319. The reversal of 647395213253 is 352312593746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595585714564 + 51809498689 = 771742^2 + 227617^2 .

It is a cyclic number.

It is not a de Polignac number, because 647395213253 - 2²² = 647391018949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647395213753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323697606626 + 323697606627.

It is an arithmetic number, because the mean of its divisors is an integer number (323697606627).

Almost surely, 2^647395213253 is an apocalyptic number.

It is an amenable number.

647395213253 is a deficient number, since it is larger than the sum of its proper divisors (1).

647395213253 is an equidigital number, since it uses as much as digits as its factorization.

647395213253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 50.

The spelling of 647395213253 in words is "six hundred forty-seven billion, three hundred ninety-five million, two hundred thirteen thousand, two hundred fifty-three".