4256217007573 has 2 divisors, whose sum is σ = 4256217007574. Its totient is φ = 4256217007572.

The previous prime is 4256217007543. The next prime is 4256217007577. The reversal of 4256217007573 is 3757007126524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3954462347889 + 301754659684 = 1988583^2 + 549322^2 .

It is a cyclic number.

It is not a de Polignac number, because 4256217007573 - 2³³ = 4247627072981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4256217007577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128108503786 + 2128108503787.

It is an arithmetic number, because the mean of its divisors is an integer number (2128108503787).

Almost surely, 2^{4256217007573} is an apocalyptic number.

It is an amenable number.

4256217007573 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256217007573 is an equidigital number, since it uses as much as digits as its factorization.

4256217007573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 4256217007573 in words is "four trillion, two hundred fifty-six billion, two hundred seventeen million, seven thousand, five hundred seventy-three".