20056676565 has 16 divisors (see below), whose sum is σ = 32092560000. Its totient is φ = 10696268352.

The previous prime is 20056676557. The next prime is 20056676567. The reversal of 20056676565 is 56567665002.

It is not a de Polignac number, because 20056676565 - 2³ = 20056676557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056676567) 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, 351936 + ... + 404934.

It is an arithmetic number, because the mean of its divisors is an integer number (2005785000).

Almost surely, 2^20056676565 is an apocalyptic number.

It is an amenable number.

20056676565 is a deficient number, since it is larger than the sum of its proper divisors (12035883435).

20056676565 is a wasteful number, since it uses less digits than its factorization.

20056676565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78236.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 20056676565 in words is "twenty billion, fifty-six million, six hundred seventy-six thousand, five hundred sixty-five".