20305400104 has 24 divisors (see below), whose sum is σ = 41848424730. Its totient is φ = 9229726880.

The previous prime is 20305400053. The next prime is 20305400113. The reversal of 20305400104 is 40100450302.

It can be written as a sum of positive squares in only one way, i.e., 18359708004 + 1945692100 = 135498^2 + 44110^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10487359 + ... + 10489294.

Almost surely, 2^20305400104 is an apocalyptic number.

It is an amenable number.

20305400104 is an abundant number, since it is smaller than the sum of its proper divisors (21543024626).

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

20305400104 is a wasteful number, since it uses less digits than its factorization.

20305400104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20976681 (or 20976666 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20305400104 its reverse (40100450302), we get a palindrome (60405850406).

The spelling of 20305400104 in words is "twenty billion, three hundred five million, four hundred thousand, one hundred four".