204690237071 has 4 divisors (see below), whose sum is σ = 204721432152. Its totient is φ = 204659041992.

The previous prime is 204690236917. The next prime is 204690237079. The reversal of 204690237071 is 170732096402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204690237071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204690237079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15587696 + ... + 15600821.

It is an arithmetic number, because the mean of its divisors is an integer number (51180358038).

Almost surely, 2^204690237071 is an apocalyptic number.

204690237071 is a deficient number, since it is larger than the sum of its proper divisors (31195081).

204690237071 is an equidigital number, since it uses as much as digits as its factorization.

204690237071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31195080.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 204690237071 in words is "two hundred four billion, six hundred ninety million, two hundred thirty-seven thousand, seventy-one".