21935155428312 has 256 divisors, whose sum is σ = 67151282688000. Its totient is φ = 5831882592768.

The previous prime is 21935155428299. The next prime is 21935155428341. The reversal of 21935155428312 is 21382455153912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45594639 + ... + 46073217.

It is an arithmetic number, because the mean of its divisors is an integer number (262309698000).

Almost surely, 2^{21935155428312} 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 21935155428312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33575641344000).

21935155428312 is an abundant number, since it is smaller than the sum of its proper divisors (45216127259688).

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

21935155428312 is a wasteful number, since it uses less digits than its factorization.

21935155428312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478870 (or 478866 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 51.

The spelling of 21935155428312 in words is "twenty-one trillion, nine hundred thirty-five billion, one hundred fifty-five million, four hundred twenty-eight thousand, three hundred twelve".