204510664023061 has 4 divisors (see below), whose sum is σ = 223102542570624. Its totient is φ = 185918785475500.

The previous prime is 204510664023041. The next prime is 204510664023073. The reversal of 204510664023061 is 160320466015402.

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 not a de Polignac number, because 204510664023061 - 2¹³ = 204510664014869 is a prime.

It is a super-3 number, since 3×204510664023061³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204510664023041) 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, 9295939273765 + ... + 9295939273786.

It is an arithmetic number, because the mean of its divisors is an integer number (55775635642656).

Almost surely, 2^{204510664023061} is an apocalyptic number.

It is an amenable number.

204510664023061 is a deficient number, since it is larger than the sum of its proper divisors (18591878547563).

204510664023061 is a wasteful number, since it uses less digits than its factorization.

204510664023061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18591878547562.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 204510664023061 in words is "two hundred four trillion, five hundred ten billion, six hundred sixty-four million, twenty-three thousand, sixty-one".