22994443136 has 64 divisors (see below), whose sum is σ = 52399056480. Its totient is φ = 9846171648.

The previous prime is 22994443133. The next prime is 22994443139. The reversal of 22994443136 is 63134449922.

It is an interprime number because it is at equal distance from previous prime (22994443133) and next prime (22994443139).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22994443133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076270 + ... + 1097426.

Almost surely, 2^22994443136 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 22994443136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26199528240).

22994443136 is an abundant number, since it is smaller than the sum of its proper divisors (29404613344).

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

22994443136 is a wasteful number, since it uses less digits than its factorization.

22994443136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391 (or 22379 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 47.

The spelling of 22994443136 in words is "twenty-two billion, nine hundred ninety-four million, four hundred forty-three thousand, one hundred thirty-six".