55303230640 has 60 divisors (see below), whose sum is σ = 149572676736. Its totient is φ = 18961106304.

The previous prime is 55303230629. The next prime is 55303230683. The reversal of 55303230640 is 4603230355.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7050064 + ... + 7057903.

Almost surely, 2^55303230640 is an apocalyptic number.

It is an amenable number.

55303230640 is an abundant number, since it is smaller than the sum of its proper divisors (94269446096).

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

55303230640 is a wasteful number, since it uses less digits than its factorization.

55303230640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14107994 (or 14107981 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 55303230640 its reverse (4603230355), we get a palindrome (59906460995).

The spelling of 55303230640 in words is "fifty-five billion, three hundred three million, two hundred thirty thousand, six hundred forty".