53399553618 has 16 divisors (see below), whose sum is σ = 112420113120. Its totient is φ = 16863016896.

The previous prime is 53399553589. The next prime is 53399553653. The reversal of 53399553618 is 81635599335.

It is a happy number.

53399553618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 234208455 + ... + 234208682.

It is an arithmetic number, because the mean of its divisors is an integer number (7026257070).

Almost surely, 2^53399553618 is an apocalyptic number.

53399553618 is an abundant number, since it is smaller than the sum of its proper divisors (59020559502).

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

53399553618 is a wasteful number, since it uses less digits than its factorization.

53399553618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468417161.

The product of its digits is 13122000, while the sum is 57.

The spelling of 53399553618 in words is "fifty-three billion, three hundred ninety-nine million, five hundred fifty-three thousand, six hundred eighteen".