21304676250 has 960 divisors, whose sum is σ = 77370733440. Its totient is φ = 4147200000.

The previous prime is 21304676227. The next prime is 21304676287. The reversal of 21304676250 is 5267640312.

21304676250 is a `hidden beast` number, since 2 + 130 + 467 + 62 + 5 + 0 = 666.

It is a super-3 number, since 3×21304676250³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 519626230 + ... + 519626270.

It is an arithmetic number, because the mean of its divisors is an integer number (80594514).

Almost surely, 2^21304676250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21304676250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38685366720).

21304676250 is an abundant number, since it is smaller than the sum of its proper divisors (56066057190).

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

21304676250 is a wasteful number, since it uses less digits than its factorization.

21304676250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 21304676250 in words is "twenty-one billion, three hundred four million, six hundred seventy-six thousand, two hundred fifty".