22440553245540 has 72 divisors (see below), whose sum is σ = 69002139563448. Its totient is φ = 5902172904960.

The previous prime is 22440553245527. The next prime is 22440553245631. The reversal of 22440553245540 is 4554235504422.

22440553245540 is a `hidden beast` number, since 2 + 2 + 4 + 4 + 0 + 553 + 2 + 4 + 55 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3843983729664 + 18596569515876 = 1960608^2 + 4312374^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 853889191 + ... + 853915470.

Almost surely, 2^{22440553245540} is an apocalyptic number.

22440553245540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440553245540 is an abundant number, since it is smaller than the sum of its proper divisors (46561586317908).

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

22440553245540 is a wasteful number, since it uses less digits than its factorization.

22440553245540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707804749 (or 1707804744 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 45.

Adding to 22440553245540 its reverse (4554235504422), we get a palindrome (26994788749962).

The spelling of 22440553245540 in words is "twenty-two trillion, four hundred forty billion, five hundred fifty-three million, two hundred forty-five thousand, five hundred forty".