20312443636141 has 8 divisors (see below), whose sum is σ = 20670954262200. Its totient is φ = 19954756227840.

The previous prime is 20312443636007. The next prime is 20312443636171. The reversal of 20312443636141 is 14163634421302.

It can be written as a sum of positive squares in 4 ways, for example, as 1325770319241 + 18986673316900 = 1151421^2 + 4357370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312443636141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312443636094 and 20312443636103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312443636171) 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, 205754656 + ... + 205853353.

It is an arithmetic number, because the mean of its divisors is an integer number (2583869282775).

Almost surely, 2^{20312443636141} is an apocalyptic number.

It is an amenable number.

20312443636141 is a deficient number, since it is larger than the sum of its proper divisors (358510626059).

20312443636141 is an equidigital number, since it uses as much as digits as its factorization.

20312443636141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411608879.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 20312443636141 in words is "twenty trillion, three hundred twelve billion, four hundred forty-three million, six hundred thirty-six thousand, one hundred forty-one".