22020053542640 has 40 divisors (see below), whose sum is σ = 51231859873728. Its totient is φ = 8801959415040.

The previous prime is 22020053542631. The next prime is 22020053542649. The reversal of 22020053542640 is 4624535002022.

It is an interprime number because it is at equal distance from previous prime (22020053542631) and next prime (22020053542649).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 22020053542640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020053542649) 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, 94601816 + ... + 94834295.

Almost surely, 2^{22020053542640} is an apocalyptic number.

22020053542640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020053542640 is an abundant number, since it is smaller than the sum of its proper divisors (29211806331088).

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

22020053542640 is a wasteful number, since it uses less digits than its factorization.

22020053542640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189437577 (or 189437571 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 22020053542640 its reverse (4624535002022), we get a palindrome (26644588544662).

The spelling of 22020053542640 in words is "twenty-two trillion, twenty billion, fifty-three million, five hundred forty-two thousand, six hundred forty".