204140356646 has 4 divisors (see below), whose sum is σ = 306210534972. Its totient is φ = 102070178322.

The previous prime is 204140356633. The next prime is 204140356687. The reversal of 204140356646 is 646653041402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51035089160 + ... + 51035089163.

It is an arithmetic number, because the mean of its divisors is an integer number (76552633743).

Almost surely, 2^204140356646 is an apocalyptic number.

204140356646 is a deficient number, since it is larger than the sum of its proper divisors (102070178326).

204140356646 is a wasteful number, since it uses less digits than its factorization.

204140356646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102070178325.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 204140356646 in words is "two hundred four billion, one hundred forty million, three hundred fifty-six thousand, six hundred forty-six".