20034313243257 has 8 divisors (see below), whose sum is σ = 26732044715040. Its totient is φ = 13346395300160.

The previous prime is 20034313243187. The next prime is 20034313243277. The reversal of 20034313243257 is 75234231343002.

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

It is a cyclic number.

It is not a de Polignac number, because 20034313243257 - 2²² = 20034309048953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20034313243277) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2453377407 + ... + 2453385572.

It is an arithmetic number, because the mean of its divisors is an integer number (3341505589380).

Almost surely, 2^{20034313243257} is an apocalyptic number.

It is an amenable number.

20034313243257 is a deficient number, since it is larger than the sum of its proper divisors (6697731471783).

20034313243257 is a wasteful number, since it uses less digits than its factorization.

20034313243257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906764343.

The product of its (nonzero) digits is 362880, while the sum is 39.

Adding to 20034313243257 its reverse (75234231343002), we get a palindrome (95268544586259).

The spelling of 20034313243257 in words is "twenty trillion, thirty-four billion, three hundred thirteen million, two hundred forty-three thousand, two hundred fifty-seven".