20057050107217 has 4 divisors (see below), whose sum is σ = 20058413341540. Its totient is φ = 20055686872896.

The previous prime is 20057050107187. The next prime is 20057050107221. The reversal of 20057050107217 is 71270105075002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6325808493456 + 13731241613761 = 2515116^2 + 3705569^2 .

It is a cyclic number.

It is not a de Polignac number, because 20057050107217 - 2²⁷ = 20056915889489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20057050147217) 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 3 ways as a sum of consecutive naturals, for example, 681595092 + ... + 681624517.

It is an arithmetic number, because the mean of its divisors is an integer number (5014603335385).

Almost surely, 2^{20057050107217} is an apocalyptic number.

It is an amenable number.

20057050107217 is a deficient number, since it is larger than the sum of its proper divisors (1363234323).

20057050107217 is a wasteful number, since it uses less digits than its factorization.

20057050107217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363234322.

The product of its (nonzero) digits is 34300, while the sum is 37.

The spelling of 20057050107217 in words is "twenty trillion, fifty-seven billion, fifty million, one hundred seven thousand, two hundred seventeen".