21934803996 has 192 divisors, whose sum is σ = 68923008000. Its totient is φ = 5889189888.

The previous prime is 21934803953. The next prime is 21934803997. The reversal of 21934803996 is 69930843912.

21934803996 is a `hidden beast` number, since 219 + 34 + 8 + 0 + 399 + 6 = 666.

It is a super-2 number, since 2×21934803996² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21934803997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13480935 + ... + 13482561.

It is an arithmetic number, because the mean of its divisors is an integer number (358974000).

Almost surely, 2^21934803996 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 21934803996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34461504000).

21934803996 is an abundant number, since it is smaller than the sum of its proper divisors (46988204004).

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

21934803996 is a wasteful number, since it uses less digits than its factorization.

21934803996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 21934803996 in words is "twenty-one billion, nine hundred thirty-four million, eight hundred three thousand, nine hundred ninety-six".