20455432010 has 16 divisors (see below), whose sum is σ = 39652068456. Its totient is φ = 7552774848.

The previous prime is 20455432009. The next prime is 20455432013. The reversal of 20455432010 is 1023455402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14495437609 + 5959994401 = 120397^2 + 77201^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20455432013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78674609 + ... + 78674868.

Almost surely, 2^20455432010 is an apocalyptic number.

20455432010 is a deficient number, since it is larger than the sum of its proper divisors (19196636446).

20455432010 is a wasteful number, since it uses less digits than its factorization.

20455432010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157349497.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20455432010 its reverse (1023455402), we get a palindrome (21478887412).

The spelling of 20455432010 in words is "twenty billion, four hundred fifty-five million, four hundred thirty-two thousand, ten".