204532436645 has 16 divisors (see below), whose sum is σ = 249129744960. Its totient is φ = 161165942784.

The previous prime is 204532436609. The next prime is 204532436663. The reversal of 204532436645 is 546634235402.

It is a cyclic number.

It is not a de Polignac number, because 204532436645 - 2³⁴ = 187352567461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204532436596 and 204532436605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3573866 + ... + 3630644.

It is an arithmetic number, because the mean of its divisors is an integer number (15570609060).

Almost surely, 2^204532436645 is an apocalyptic number.

It is an amenable number.

204532436645 is a deficient number, since it is larger than the sum of its proper divisors (44597308315).

204532436645 is a wasteful number, since it uses less digits than its factorization.

204532436645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67604.

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 204532436645 in words is "two hundred four billion, five hundred thirty-two million, four hundred thirty-six thousand, six hundred forty-five".