55646320010 has 16 divisors (see below), whose sum is σ = 100483392456. Its totient is φ = 22187413248.

The previous prime is 55646319961. The next prime is 55646320021. The reversal of 55646320010 is 1002364655.

It can be written as a sum of positive squares in 4 ways, for example, as 45630513769 + 10015806241 = 213613^2 + 100079^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8886059 + ... + 8892318.

Almost surely, 2^55646320010 is an apocalyptic number.

55646320010 is a deficient number, since it is larger than the sum of its proper divisors (44837072446).

55646320010 is a wasteful number, since it uses less digits than its factorization.

55646320010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17778697.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 55646320010 its reverse (1002364655), we get a palindrome (56648684665).

The spelling of 55646320010 in words is "fifty-five billion, six hundred forty-six million, three hundred twenty thousand, ten".