20061320144 has 10 divisors (see below), whose sum is σ = 38868807810. Its totient is φ = 10030660064.

The previous prime is 20061320141. The next prime is 20061320159. The reversal of 20061320144 is 44102316002.

It can be written as a sum of positive squares in only one way, i.e., 19603360144 + 457960000 = 140012^2 + 21400^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061320141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626916239 + ... + 626916270.

It is an arithmetic number, because the mean of its divisors is an integer number (3886880781).

Almost surely, 2^20061320144 is an apocalyptic number.

It is an amenable number.

20061320144 is a deficient number, since it is larger than the sum of its proper divisors (18807487666).

20061320144 is a wasteful number, since it uses less digits than its factorization.

20061320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253832517 (or 1253832511 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20061320144 its reverse (44102316002), we get a palindrome (64163636146).

The spelling of 20061320144 in words is "twenty billion, sixty-one million, three hundred twenty thousand, one hundred forty-four".