20722783630 has 24 divisors (see below), whose sum is σ = 38111575608. Its totient is φ = 8112740688.

The previous prime is 20722783603. The next prime is 20722783633. The reversal of 20722783630 is 3638722702.

It is a super-2 number, since 2×20722783630² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20722783633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446964 + ... + 491143.

It is an arithmetic number, because the mean of its divisors is an integer number (1587982317).

Almost surely, 2^20722783630 is an apocalyptic number.

20722783630 is a deficient number, since it is larger than the sum of its proper divisors (17388791978).

20722783630 is an equidigital number, since it uses as much as digits as its factorization.

20722783630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938208 (or 938161 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 20722783630 in words is "twenty billion, seven hundred twenty-two million, seven hundred eighty-three thousand, six hundred thirty".