204163653134 has 24 divisors (see below), whose sum is σ = 356267850120. Its totient is φ = 87493032816.

The previous prime is 204163653121. The next prime is 204163653137. The reversal of 204163653134 is 431356361402.

It is a super-2 number, since 2×204163653134² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204163653137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1680512 + ... + 1797900.

It is an arithmetic number, because the mean of its divisors is an integer number (14844493755).

Almost surely, 2^204163653134 is an apocalyptic number.

204163653134 is a deficient number, since it is larger than the sum of its proper divisors (152104196986).

204163653134 is a wasteful number, since it uses less digits than its factorization.

204163653134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135152 (or 135145 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 204163653134 in words is "two hundred four billion, one hundred sixty-three million, six hundred fifty-three thousand, one hundred thirty-four".