20104369864 has 16 divisors (see below), whose sum is σ = 39913087500. Its totient is φ = 9460879872.

The previous prime is 20104369853. The next prime is 20104369907. The reversal of 20104369864 is 46896340102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18725732964 + 1378636900 = 136842^2 + 37130^2 .

It is a super-2 number, since 2×20104369864² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20104369864.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73912989 + ... + 73913260.

Almost surely, 2^20104369864 is an apocalyptic number.

It is an amenable number.

20104369864 is a deficient number, since it is larger than the sum of its proper divisors (19808717636).

20104369864 is a wasteful number, since it uses less digits than its factorization.

20104369864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147826272 (or 147826268 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 20104369864 in words is "twenty billion, one hundred four million, three hundred sixty-nine thousand, eight hundred sixty-four".