20522235144 has 32 divisors (see below), whose sum is σ = 51315099840. Its totient is φ = 6839476800.

The previous prime is 20522235127. The next prime is 20522235163. The reversal of 20522235144 is 44153222502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57714 + ... + 210654.

It is an arithmetic number, because the mean of its divisors is an integer number (1603596870).

Almost surely, 2^20522235144 is an apocalyptic number.

20522235144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20522235144 is an abundant number, since it is smaller than the sum of its proper divisors (30792864696).

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

20522235144 is a wasteful number, since it uses less digits than its factorization.

20522235144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158541 (or 158537 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20522235144 its reverse (44153222502), we get a palindrome (64675457646).

The spelling of 20522235144 in words is "twenty billion, five hundred twenty-two million, two hundred thirty-five thousand, one hundred forty-four".