204202422457 has 8 divisors (see below), whose sum is σ = 222776672832. Its totient is φ = 185629904400.

The previous prime is 204202422443. The next prime is 204202422491. The reversal of 204202422457 is 754224202402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204202422457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204202423457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180178 + ... + 663979.

It is an arithmetic number, because the mean of its divisors is an integer number (27847084104).

Almost surely, 2^204202422457 is an apocalyptic number.

It is an amenable number.

204202422457 is a deficient number, since it is larger than the sum of its proper divisors (18574250375).

204202422457 is a wasteful number, since it uses less digits than its factorization.

204202422457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866159.

The product of its (nonzero) digits is 71680, while the sum is 34.

Adding to 204202422457 its reverse (754224202402), we get a palindrome (958426624859).

The spelling of 204202422457 in words is "two hundred four billion, two hundred two million, four hundred twenty-two thousand, four hundred fifty-seven".