21112386750 has 896 divisors, whose sum is σ = 77915335680. Its totient is φ = 4157049600.

The previous prime is 21112386719. The next prime is 21112386811. The reversal of 21112386750 is 5768321112.

21112386750 is a `hidden beast` number, since 211 + 12 + 386 + 7 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 447 ways as a sum of consecutive naturals, for example, 315110217 + ... + 315110283.

It is an arithmetic number, because the mean of its divisors is an integer number (86959080).

Almost surely, 2^21112386750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112386750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38957667840).

21112386750 is an abundant number, since it is smaller than the sum of its proper divisors (56802948930).

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

21112386750 is a wasteful number, since it uses less digits than its factorization.

21112386750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 21112386750 in words is "twenty-one billion, one hundred twelve million, three hundred eighty-six thousand, seven hundred fifty".