204254639719 has 16 divisors (see below), whose sum is σ = 232924210848. Its totient is φ = 177437924352.

The previous prime is 204254639711. The next prime is 204254639741. The reversal of 204254639719 is 917936452402.

It is not a de Polignac number, because 204254639719 - 2³ = 204254639711 is a prime.

It is a super-2 number, since 2×204254639719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204254639711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3548779 + ... + 3605875.

It is an arithmetic number, because the mean of its divisors is an integer number (14557763178).

Almost surely, 2^204254639719 is an apocalyptic number.

204254639719 is a deficient number, since it is larger than the sum of its proper divisors (28669571129).

204254639719 is a wasteful number, since it uses less digits than its factorization.

204254639719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73314.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 204254639719 in words is "two hundred four billion, two hundred fifty-four million, six hundred thirty-nine thousand, seven hundred nineteen".