20313886135438 has 32 divisors (see below), whose sum is σ = 34881958589184. Its totient is φ = 8691414148032.

The previous prime is 20313886135427. The next prime is 20313886135507. The reversal of 20313886135438 is 83453168831302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227886345 + ... + 227975467.

It is an arithmetic number, because the mean of its divisors is an integer number (1090061205912).

Almost surely, 2^{20313886135438} is an apocalyptic number.

20313886135438 is a deficient number, since it is larger than the sum of its proper divisors (14568072453746).

20313886135438 is a wasteful number, since it uses less digits than its factorization.

20313886135438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116136.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 20313886135438 in words is "twenty trillion, three hundred thirteen billion, eight hundred eighty-six million, one hundred thirty-five thousand, four hundred thirty-eight".