204742548413 has 16 divisors (see below), whose sum is σ = 235690269696. Its totient is φ = 176366847360.

The previous prime is 204742548407. The next prime is 204742548421. The reversal of 204742548413 is 314845247402.

It is a cyclic number.

It is not a de Polignac number, because 204742548413 - 2²² = 204738354109 is a prime.

It is a super-2 number, since 2×204742548413² (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 (204742548443) 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, 8338445 + ... + 8362962.

It is an arithmetic number, because the mean of its divisors is an integer number (14730641856).

Almost surely, 2^204742548413 is an apocalyptic number.

204742548413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204742548413 is a deficient number, since it is larger than the sum of its proper divisors (30947721283).

204742548413 is a wasteful number, since it uses less digits than its factorization.

204742548413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16701484.

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 204742548413 in words is "two hundred four billion, seven hundred forty-two million, five hundred forty-eight thousand, four hundred thirteen".