20455000234 has 8 divisors (see below), whose sum is σ = 30701433348. Its totient is φ = 10221189120.

The previous prime is 20455000229. The next prime is 20455000249. The reversal of 20455000234 is 43200055402.

It can be written as a sum of positive squares in 2 ways, for example, as 19797334209 + 657666025 = 140703^2 + 25645^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20455000199 and 20455000208.

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, 3151447 + ... + 3157930.

Almost surely, 2^20455000234 is an apocalyptic number.

20455000234 is a deficient number, since it is larger than the sum of its proper divisors (10246433114).

20455000234 is a wasteful number, since it uses less digits than its factorization.

20455000234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311000.

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 20455000234 its reverse (43200055402), we get a palindrome (63655055636).

The spelling of 20455000234 in words is "twenty billion, four hundred fifty-five million, two hundred thirty-four", and thus it is an aban number.