206231405504 has 224 divisors, whose sum is σ = 460822487040. Its totient is φ = 91187712000.

The previous prime is 206231405483. The next prime is 206231405539. The reversal of 206231405504 is 405504132602.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133655357 + ... + 133656899.

Almost surely, 2^206231405504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206231405504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230411243520).

206231405504 is an abundant number, since it is smaller than the sum of its proper divisors (254591081536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206231405504 is a wasteful number, since it uses less digits than its factorization.

206231405504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 206231405504 in words is "two hundred six billion, two hundred thirty-one million, four hundred five thousand, five hundred four".