74243860079618 has 8 divisors (see below), whose sum is σ = 111388909459212. Its totient is φ = 37114223593216.

The previous prime is 74243860079617. The next prime is 74243860079639. The reversal of 74243860079618 is 81697006834247.

It can be written as a sum of positive squares in 2 ways, for example, as 52474478381329 + 21769381698289 = 7243927^2 + 4665767^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74243860079611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853211255 + ... + 3853230522.

Almost surely, 2^{74243860079618} is an apocalyptic number.

74243860079618 is a deficient number, since it is larger than the sum of its proper divisors (37145049379594).

74243860079618 is a wasteful number, since it uses less digits than its factorization.

74243860079618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706446596.

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 74243860079618 in words is "seventy-four trillion, two hundred forty-three billion, eight hundred sixty million, seventy-nine thousand, six hundred eighteen".