204055623511 has 4 divisors (see below), whose sum is σ = 205662360832. Its totient is φ = 202448886192.

The previous prime is 204055623509. The next prime is 204055623523. The reversal of 204055623511 is 115326550402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204055623511 - 2¹ = 204055623509 is a prime.

It is a super-3 number, since 3×204055623511³ (a number of 35 digits) contains 333 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 (204055629511) 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, 803368470 + ... + 803368723.

It is an arithmetic number, because the mean of its divisors is an integer number (51415590208).

Almost surely, 2^204055623511 is an apocalyptic number.

204055623511 is a deficient number, since it is larger than the sum of its proper divisors (1606737321).

204055623511 is a wasteful number, since it uses less digits than its factorization.

204055623511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606737320.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 204055623511 in words is "two hundred four billion, fifty-five million, six hundred twenty-three thousand, five hundred eleven".