20057400717443 has 4 divisors (see below), whose sum is σ = 20125856010288. Its totient is φ = 19988945424600.

The previous prime is 20057400717383. The next prime is 20057400717481. The reversal of 20057400717443 is 34471700475002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20057400717443 - 2⁶ = 20057400717379 is a prime.

It is a super-2 number, since 2×20057400717443² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20057400717394 and 20057400717403.

It is not an unprimeable number, because it can be changed into a prime (20057400717943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34227645983 + ... + 34227646568.

It is an arithmetic number, because the mean of its divisors is an integer number (5031464002572).

Almost surely, 2^{20057400717443} is an apocalyptic number.

20057400717443 is a deficient number, since it is larger than the sum of its proper divisors (68455292845).

20057400717443 is an equidigital number, since it uses as much as digits as its factorization.

20057400717443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68455292844.

The product of its (nonzero) digits is 658560, while the sum is 44.

The spelling of 20057400717443 in words is "twenty trillion, fifty-seven billion, four hundred million, seven hundred seventeen thousand, four hundred forty-three".