204723070493 has 4 divisors (see below), whose sum is σ = 215497968960. Its totient is φ = 193948172028.

The previous prime is 204723070481. The next prime is 204723070523. The reversal of 204723070493 is 394070327402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204723070493 - 2⁶ = 204723070429 is a prime.

It is a super-3 number, since 3×204723070493³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204723070493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204723070193) 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, 5387449205 + ... + 5387449242.

It is an arithmetic number, because the mean of its divisors is an integer number (53874492240).

Almost surely, 2^204723070493 is an apocalyptic number.

It is an amenable number.

204723070493 is a deficient number, since it is larger than the sum of its proper divisors (10774898467).

204723070493 is a wasteful number, since it uses less digits than its factorization.

204723070493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774898466.

The product of its (nonzero) digits is 254016, while the sum is 41.

Adding to 204723070493 its reverse (394070327402), we get a palindrome (598793397895).

The spelling of 204723070493 in words is "two hundred four billion, seven hundred twenty-three million, seventy thousand, four hundred ninety-three".