38678447118618 has 24 divisors (see below), whose sum is σ = 85384496471508. Its totient is φ = 12649555032192.

The previous prime is 38678447118607. The next prime is 38678447118637. The reversal of 38678447118618 is 81681174487683.

38678447118618 is a `hidden beast` number, since 3 + 8 + 6 + 7 + 8 + 447 + 118 + 61 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33714431926569 + 4964015192049 = 5806413^2 + 2228007^2 .

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, 20271721855 + ... + 20271723762.

Almost surely, 2^{38678447118618} is an apocalyptic number.

38678447118618 is an abundant number, since it is smaller than the sum of its proper divisors (46706049352890).

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

38678447118618 is a wasteful number, since it uses less digits than its factorization.

38678447118618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40543445678 (or 40543445675 counting only the distinct ones).

The product of its digits is 346816512, while the sum is 72.

The spelling of 38678447118618 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred forty-seven million, one hundred eighteen thousand, six hundred eighteen".