204145481613 has 16 divisors (see below), whose sum is σ = 279786260160. Its totient is φ = 132307047936.

The previous prime is 204145481611. The next prime is 204145481633. The reversal of 204145481613 is 316184541402.

It is not a de Polignac number, because 204145481613 - 2¹ = 204145481611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204145481611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642948 + ... + 906461.

It is an arithmetic number, because the mean of its divisors is an integer number (17486641260).

Almost surely, 2^204145481613 is an apocalyptic number.

It is an amenable number.

204145481613 is a deficient number, since it is larger than the sum of its proper divisors (75640778547).

204145481613 is a wasteful number, since it uses less digits than its factorization.

204145481613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550636.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 204145481613 in words is "two hundred four billion, one hundred forty-five million, four hundred eighty-one thousand, six hundred thirteen".