65555050618 has 12 divisors (see below), whose sum is σ = 103780365210. Its totient is φ = 31052392056.

The previous prime is 65555050553. The next prime is 65555050619. The reversal of 65555050618 is 81605055556.

It is a happy number.

65555050618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61828314409 + 3726736209 = 248653^2 + 61047^2 .

It is not an unprimeable number, because it can be changed into a prime (65555050619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45397513 + ... + 45398956.

Almost surely, 2^65555050618 is an apocalyptic number.

65555050618 is a deficient number, since it is larger than the sum of its proper divisors (38225314592).

65555050618 is a wasteful number, since it uses less digits than its factorization.

65555050618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90796509 (or 90796490 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 46.

The spelling of 65555050618 in words is "sixty-five billion, five hundred fifty-five million, fifty thousand, six hundred eighteen".