22405052145440 has 24 divisors (see below), whose sum is σ = 52931935693980. Its totient is φ = 8962020858112.

The previous prime is 22405052145431. The next prime is 22405052145457. The reversal of 22405052145440 is 4454125050422.

It can be written as a sum of positive squares in 2 ways, for example, as 21606023539984 + 799028605456 = 4648228^2 + 893884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22405052145394 and 22405052145403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70015787795 + ... + 70015788114.

Almost surely, 2^{22405052145440} is an apocalyptic number.

22405052145440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22405052145440 is an abundant number, since it is smaller than the sum of its proper divisors (30526883548540).

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

22405052145440 is a wasteful number, since it uses less digits than its factorization.

22405052145440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140031575924 (or 140031575916 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 22405052145440 its reverse (4454125050422), we get a palindrome (26859177195862).

The spelling of 22405052145440 in words is "twenty-two trillion, four hundred five billion, fifty-two million, one hundred forty-five thousand, four hundred forty".