544494350618 has 4 divisors (see below), whose sum is σ = 816741525930. Its totient is φ = 272247175308.

The previous prime is 544494350611. The next prime is 544494350639. The reversal of 544494350618 is 816053494445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 506185292089 + 38309058529 = 711467^2 + 195727^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 544494350618.

It is not an unprimeable number, because it can be changed into a prime (544494350611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136123587653 + ... + 136123587656.

Almost surely, 2^544494350618 is an apocalyptic number.

544494350618 is a deficient number, since it is larger than the sum of its proper divisors (272247175312).

544494350618 is a wasteful number, since it uses less digits than its factorization.

544494350618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272247175311.

The product of its (nonzero) digits is 8294400, while the sum is 53.

The spelling of 544494350618 in words is "five hundred forty-four billion, four hundred ninety-four million, three hundred fifty thousand, six hundred eighteen".