20106056065 has 8 divisors (see below), whose sum is σ = 24138549288. Its totient is φ = 16077323520.

The previous prime is 20106056023. The next prime is 20106056083. The reversal of 20106056065 is 56065060102.

It can be written as a sum of positive squares in 4 ways, for example, as 6414247921 + 13691808144 = 80089^2 + 117012^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20106056065 - 2¹³ = 20106047873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928392 + ... + 949801.

It is an arithmetic number, because the mean of its divisors is an integer number (3017318661).

Almost surely, 2^20106056065 is an apocalyptic number.

It is an amenable number.

20106056065 is a deficient number, since it is larger than the sum of its proper divisors (4032493223).

20106056065 is a wasteful number, since it uses less digits than its factorization.

20106056065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880339.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 20106056065 in words is "twenty billion, one hundred six million, fifty-six thousand, sixty-five".