20364994404 has 30 divisors (see below), whose sum is σ = 53238118934. Its totient is φ = 6788331360.

The previous prime is 20364994373. The next prime is 20364994427. The reversal of 20364994404 is 40449946302.

It can be written as a sum of positive squares in only one way, i.e., 19894538304 + 470456100 = 141048^2 + 21690^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20364994404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31427137 + ... + 31427784.

Almost surely, 2^20364994404 is an apocalyptic number.

It is an amenable number.

20364994404 is an abundant number, since it is smaller than the sum of its proper divisors (32873124530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20364994404 is a wasteful number, since it uses less digits than its factorization.

20364994404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62854937 (or 62854926 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 20364994404 in words is "twenty billion, three hundred sixty-four million, nine hundred ninety-four thousand, four hundred four".