204111365145545 has 32 divisors (see below), whose sum is σ = 288340262227584. Its totient is φ = 136746736358400.

The previous prime is 204111365145481. The next prime is 204111365145551. The reversal of 204111365145545 is 545541563111402.

It is not a de Polignac number, because 204111365145545 - 2⁶ = 204111365145481 is a prime.

It is a super-2 number, since 2×204111365145545² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204111365145545.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290352032 + ... + 291054161.

It is an arithmetic number, because the mean of its divisors is an integer number (9010633194612).

Almost surely, 2^{204111365145545} is an apocalyptic number.

It is an amenable number.

204111365145545 is a deficient number, since it is larger than the sum of its proper divisors (84228897082039).

204111365145545 is a wasteful number, since it uses less digits than its factorization.

204111365145545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581406713.

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 204111365145545 in words is "two hundred four trillion, one hundred eleven billion, three hundred sixty-five million, one hundred forty-five thousand, five hundred forty-five".