204886280461 has 4 divisors (see below), whose sum is σ = 209245563072. Its totient is φ = 200526997852.

The previous prime is 204886280441. The next prime is 204886280477. The reversal of 204886280461 is 164082688402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204886280461 - 2¹¹ = 204886278413 is a prime.

It is a super-2 number, since 2×204886280461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204886280441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179641235 + ... + 2179641328.

It is an arithmetic number, because the mean of its divisors is an integer number (52311390768).

Almost surely, 2^204886280461 is an apocalyptic number.

It is an amenable number.

204886280461 is a deficient number, since it is larger than the sum of its proper divisors (4359282611).

204886280461 is an equidigital number, since it uses as much as digits as its factorization.

204886280461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359282610.

The product of its (nonzero) digits is 1179648, while the sum is 49.

The spelling of 204886280461 in words is "two hundred four billion, eight hundred eighty-six million, two hundred eighty thousand, four hundred sixty-one".