204320551461 has 16 divisors (see below), whose sum is σ = 302847336960. Its totient is φ = 121679732160.

The previous prime is 204320551429. The next prime is 204320551471. The reversal of 204320551461 is 164155023402.

It is not a de Polignac number, because 204320551461 - 2⁵ = 204320551429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204320551471) 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, 84498606 + ... + 84501023.

It is an arithmetic number, because the mean of its divisors is an integer number (18927958560).

Almost surely, 2^204320551461 is an apocalyptic number.

It is an amenable number.

204320551461 is a deficient number, since it is larger than the sum of its proper divisors (98526785499).

204320551461 is a wasteful number, since it uses less digits than its factorization.

204320551461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168999676.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 204320551461 its reverse (164155023402), we get a palindrome (368475574863).

The spelling of 204320551461 in words is "two hundred four billion, three hundred twenty million, five hundred fifty-one thousand, four hundred sixty-one".