20012560161344 has 14 divisors (see below), whose sum is σ = 39712424070294. Its totient is φ = 10006280080640.

The previous prime is 20012560161337. The next prime is 20012560161367. The reversal of 20012560161344 is 44316106521002.

It can be written as a sum of positive squares in only one way, i.e., 20011665433600 + 894727744 = 4473440^2 + 29912^2 .

It is a super-2 number, since 2×20012560161344² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156348126197 + ... + 156348126324.

Almost surely, 2^{20012560161344} is an apocalyptic number.

It is an amenable number.

20012560161344 is a deficient number, since it is larger than the sum of its proper divisors (19699863908950).

20012560161344 is an equidigital number, since it uses as much as digits as its factorization.

20012560161344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312696252533 (or 312696252523 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 20012560161344 its reverse (44316106521002), we get a palindrome (64328666682346).

The spelling of 20012560161344 in words is "twenty trillion, twelve billion, five hundred sixty million, one hundred sixty-one thousand, three hundred forty-four".