667252048618 has 8 divisors (see below), whose sum is σ = 1009735401348. Its totient is φ = 330673581504.

The previous prime is 667252048609. The next prime is 667252048669. The reversal of 667252048618 is 816840252766.

667252048618 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 2 ways, for example, as 496578130489 + 170673918129 = 704683^2 + 413127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476221121 + ... + 1476221572.

Almost surely, 2^667252048618 is an apocalyptic number.

667252048618 is a deficient number, since it is larger than the sum of its proper divisors (342483352730).

667252048618 is a wasteful number, since it uses less digits than its factorization.

667252048618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952442808.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 667252048618 in words is "six hundred sixty-seven billion, two hundred fifty-two million, forty-eight thousand, six hundred eighteen".