20313135346445 has 32 divisors (see below), whose sum is σ = 26004311729280. Its totient is φ = 15188926982400.

The previous prime is 20313135346417. The next prime is 20313135346477. The reversal of 20313135346445 is 54464353131302.

It is a happy number.

It is not a de Polignac number, because 20313135346445 - 2⁴⁰ = 19213623718669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313135346396 and 20313135346405.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1024994 + ... + 6455763.

It is an arithmetic number, because the mean of its divisors is an integer number (812634741540).

Almost surely, 2^{20313135346445} is an apocalyptic number.

It is an amenable number.

20313135346445 is a deficient number, since it is larger than the sum of its proper divisors (5691176382835).

20313135346445 is a wasteful number, since it uses less digits than its factorization.

20313135346445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7481165.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 20313135346445 its reverse (54464353131302), we get a palindrome (74777488477747).

The spelling of 20313135346445 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-five million, three hundred forty-six thousand, four hundred forty-five".