20005762112057 has 16 divisors (see below), whose sum is σ = 21785441832000. Its totient is φ = 18298791854784.

The previous prime is 20005762112027. The next prime is 20005762112059. The reversal of 20005762112057 is 75021126750002.

It is a cyclic number.

It is not a de Polignac number, because 20005762112057 - 2¹⁰ = 20005762111033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20005762112057.

It is not an unprimeable number, because it can be changed into a prime (20005762112059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20985794 + ... + 21918372.

It is an arithmetic number, because the mean of its divisors is an integer number (1361590114500).

Almost surely, 2^{20005762112057} is an apocalyptic number.

It is an amenable number.

20005762112057 is a deficient number, since it is larger than the sum of its proper divisors (1779679719943).

20005762112057 is a wasteful number, since it uses less digits than its factorization.

20005762112057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971560.

The product of its (nonzero) digits is 58800, while the sum is 38.

Adding to 20005762112057 its reverse (75021126750002), we get a palindrome (95026888862059).

The spelling of 20005762112057 in words is "twenty trillion, five billion, seven hundred sixty-two million, one hundred twelve thousand, fifty-seven".