457205117340221 has 16 divisors (see below), whose sum is σ = 467918698705920. Its totient is φ = 446495220062640.

The previous prime is 457205117340161. The next prime is 457205117340229. The reversal of 457205117340221 is 122043711502754.

It is a cyclic number.

It is not a de Polignac number, because 457205117340221 - 2¹⁸ = 457205117078077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457205117340229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12999473966 + ... + 12999509136.

It is an arithmetic number, because the mean of its divisors is an integer number (29244918669120).

Almost surely, 2^{457205117340221} is an apocalyptic number.

It is an amenable number.

457205117340221 is a deficient number, since it is larger than the sum of its proper divisors (10713581365699).

457205117340221 is a wasteful number, since it uses less digits than its factorization.

457205117340221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78896.

The product of its (nonzero) digits is 470400, while the sum is 44.

Adding to 457205117340221 its reverse (122043711502754), we get a palindrome (579248828842975).

The spelling of 457205117340221 in words is "four hundred fifty-seven trillion, two hundred five billion, one hundred seventeen million, three hundred forty thousand, two hundred twenty-one".