22352144540 has 48 divisors (see below), whose sum is σ = 53901832320. Its totient is φ = 7700258880.

The previous prime is 22352144473. The next prime is 22352144599. The reversal of 22352144540 is 4544125322.

It is a junction number, because it is equal to n+sod(n) for n = 22352144497 and 22352144506.

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, 2669522 + ... + 2677881.

It is an arithmetic number, because the mean of its divisors is an integer number (1122954840).

Almost surely, 2^22352144540 is an apocalyptic number.

22352144540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22352144540 is an abundant number, since it is smaller than the sum of its proper divisors (31549687780).

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

22352144540 is a wasteful number, since it uses less digits than its factorization.

22352144540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5347442 (or 5347440 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 22352144540 its reverse (4544125322), we get a palindrome (26896269862).

The spelling of 22352144540 in words is "twenty-two billion, three hundred fifty-two million, one hundred forty-four thousand, five hundred forty".