21706950076 has 48 divisors (see below), whose sum is σ = 44882145280. Its totient is φ = 8989263360.

The previous prime is 21706950071. The next prime is 21706950103. The reversal of 21706950076 is 67005960712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21706950071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565585 + ... + 602743.

Almost surely, 2^21706950076 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 21706950076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22441072640).

21706950076 is an abundant number, since it is smaller than the sum of its proper divisors (23175195204).

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

21706950076 is a wasteful number, since it uses less digits than its factorization.

21706950076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37874 (or 37872 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 21706950076 in words is "twenty-one billion, seven hundred six million, nine hundred fifty thousand, seventy-six".