204136540695 has 24 divisors (see below), whose sum is σ = 358820291232. Its totient is φ = 107339400000.

The previous prime is 204136540661. The next prime is 204136540717. The reversal of 204136540695 is 596045631402.

204136540695 is a `hidden beast` number, since 2 + 0 + 4 + 13 + 6 + 540 + 6 + 95 = 666.

It is not a de Polignac number, because 204136540695 - 2⁹ = 204136540183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 204136540695.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31943056 + ... + 31949445.

It is an arithmetic number, because the mean of its divisors is an integer number (14950845468).

Almost surely, 2^204136540695 is an apocalyptic number.

204136540695 is a deficient number, since it is larger than the sum of its proper divisors (154683750537).

204136540695 is a wasteful number, since it uses less digits than its factorization.

204136540695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63892583 (or 63892580 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 204136540695 in words is "two hundred four billion, one hundred thirty-six million, five hundred forty thousand, six hundred ninety-five".