22426072656 has 80 divisors (see below), whose sum is σ = 62548329984. Its totient is φ = 6882872832.

The previous prime is 22426072637. The next prime is 22426072673. The reversal of 22426072656 is 65627062422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202465 + ... + 292991.

Almost surely, 2^22426072656 is an apocalyptic number.

22426072656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22426072656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31274164992).

22426072656 is an abundant number, since it is smaller than the sum of its proper divisors (40122257328).

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

22426072656 is a wasteful number, since it uses less digits than its factorization.

22426072656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90948 (or 90942 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 22426072656 in words is "twenty-two billion, four hundred twenty-six million, seventy-two thousand, six hundred fifty-six".