22520244656146 has 48 divisors (see below), whose sum is σ = 36732527696088. Its totient is φ = 10347141600000.

The previous prime is 22520244656141. The next prime is 22520244656213. The reversal of 22520244656146 is 64165644202522.

It can be written as a sum of positive squares in 4 ways, for example, as 17122340547225 + 5397904108921 = 4137915^2 + 2323339^2 .

It is a super-2 number, since 2×22520244656146² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22520244656146.

It is not an unprimeable number, because it can be changed into a prime (22520244656141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2922396 + ... + 7319896.

Almost surely, 2^{22520244656146} is an apocalyptic number.

22520244656146 is a deficient number, since it is larger than the sum of its proper divisors (14212283039942).

22520244656146 is a wasteful number, since it uses less digits than its factorization.

22520244656146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397755 (or 4397736 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 49.

Adding to 22520244656146 its reverse (64165644202522), we get a palindrome (86685888858668).

The spelling of 22520244656146 in words is "twenty-two trillion, five hundred twenty billion, two hundred forty-four million, six hundred fifty-six thousand, one hundred forty-six".