20364556106 has 16 divisors (see below), whose sum is σ = 30987270600. Its totient is φ = 10035664128.

The previous prime is 20364556099. The next prime is 20364556141. The reversal of 20364556106 is 60165546302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12914276881 + 7450279225 = 113641^2 + 86315^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20364556106.

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, 159830 + ... + 257438.

Almost surely, 2^20364556106 is an apocalyptic number.

20364556106 is a deficient number, since it is larger than the sum of its proper divisors (10622714494).

20364556106 is a wasteful number, since it uses less digits than its factorization.

20364556106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99113.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 20364556106 in words is "twenty billion, three hundred sixty-four million, five hundred fifty-six thousand, one hundred six".