203454868680 has 384 divisors, whose sum is σ = 786247188480. Its totient is φ = 44647303680.

The previous prime is 203454868657. The next prime is 203454868699. The reversal of 203454868680 is 86868454302.

203454868680 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 486 + 86 + 80 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9910987 + ... + 9931493.

It is an arithmetic number, because the mean of its divisors is an integer number (2047518720).

Almost surely, 2^203454868680 is an apocalyptic number.

203454868680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203454868680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393123594240).

203454868680 is an abundant number, since it is smaller than the sum of its proper divisors (582792319800).

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

203454868680 is a wasteful number, since it uses less digits than its factorization.

203454868680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20689 (or 20682 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 203454868680 in words is "two hundred three billion, four hundred fifty-four million, eight hundred sixty-eight thousand, six hundred eighty".