204015234134645 has 16 divisors (see below), whose sum is σ = 245183151657600. Its totient is φ = 162968960558400.

The previous prime is 204015234134623. The next prime is 204015234134651. The reversal of 204015234134645 is 546431432510402.

It is not a de Polignac number, because 204015234134645 - 2³⁶ = 203946514657909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204015234134596 and 204015234134605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79581755 + ... + 82105335.

It is an arithmetic number, because the mean of its divisors is an integer number (15323946978600).

Almost surely, 2^{204015234134645} is an apocalyptic number.

It is an amenable number.

204015234134645 is a deficient number, since it is larger than the sum of its proper divisors (41167917522955).

204015234134645 is a wasteful number, since it uses less digits than its factorization.

204015234134645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547676.

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 204015234134645 in words is "two hundred four trillion, fifteen billion, two hundred thirty-four million, one hundred thirty-four thousand, six hundred forty-five".