20570605063 has 4 divisors (see below), whose sum is σ = 21126567400. Its totient is φ = 20014642728.

The previous prime is 20570604991. The next prime is 20570605087. The reversal of 20570605063 is 36050607502.

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 20570605063 - 2²⁵ = 20537050631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20570605093) 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, 277981113 + ... + 277981186.

It is an arithmetic number, because the mean of its divisors is an integer number (5281641850).

Almost surely, 2^20570605063 is an apocalyptic number.

20570605063 is a deficient number, since it is larger than the sum of its proper divisors (555962337).

20570605063 is an equidigital number, since it uses as much as digits as its factorization.

20570605063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555962336.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 20570605063 in words is "twenty billion, five hundred seventy million, six hundred five thousand, sixty-three".