22780720896 has 72 divisors (see below), whose sum is σ = 60774816144. Its totient is φ = 7575429120.

The previous prime is 22780720889. The next prime is 22780720927. The reversal of 22780720896 is 69802708722.

It is a super-2 number, since 2×22780720896² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288100 + ... + 358556.

Almost surely, 2^22780720896 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 22780720896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30387408072).

22780720896 is an abundant number, since it is smaller than the sum of its proper divisors (37994095248).

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

22780720896 is an equidigital number, since it uses as much as digits as its factorization.

22780720896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70897 (or 70883 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 22780720896 in words is "twenty-two billion, seven hundred eighty million, seven hundred twenty thousand, eight hundred ninety-six".