21010814592 has 256 divisors, whose sum is σ = 59592153600. Its totient is φ = 6548226048.

The previous prime is 21010814579. The next prime is 21010814597. The reversal of 21010814592 is 29541801012.

It is not an unprimeable number, because it can be changed into a prime (21010814597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57249993 + ... + 57250359.

It is an arithmetic number, because the mean of its divisors is an integer number (232781850).

Almost surely, 2^21010814592 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 21010814592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29796076800).

21010814592 is an abundant number, since it is smaller than the sum of its proper divisors (38581339008).

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

21010814592 is a wasteful number, since it uses less digits than its factorization.

21010814592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 21010814592 in words is "twenty-one billion, ten million, eight hundred fourteen thousand, five hundred ninety-two".