22543545440 has 72 divisors (see below), whose sum is σ = 57671193888. Its totient is φ = 8323760640.

The previous prime is 22543545439. The next prime is 22543545449. The reversal of 22543545440 is 4454534522.

It is a super-2 number, since 2×22543545440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22543545394 and 22543545403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22543545449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389816 + ... + 443895.

It is an arithmetic number, because the mean of its divisors is an integer number (800988804).

Almost surely, 2^22543545440 is an apocalyptic number.

22543545440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22543545440 is an abundant number, since it is smaller than the sum of its proper divisors (35127648448).

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

22543545440 is a wasteful number, since it uses less digits than its factorization.

22543545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833752 (or 833731 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 38.

The spelling of 22543545440 in words is "twenty-two billion, five hundred forty-three million, five hundred forty-five thousand, four hundred forty".