74139678085 has 8 divisors (see below), whose sum is σ = 97055578656. Its totient is φ = 53919765840.

The previous prime is 74139678083. The next prime is 74139678101. The reversal of 74139678085 is 58087693147.

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

It is not a de Polignac number, because 74139678085 - 2¹ = 74139678083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74139678083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673997019 + ... + 673997128.

It is an arithmetic number, because the mean of its divisors is an integer number (12131947332).

Almost surely, 2^74139678085 is an apocalyptic number.

It is an amenable number.

74139678085 is a deficient number, since it is larger than the sum of its proper divisors (22915900571).

74139678085 is a wasteful number, since it uses less digits than its factorization.

74139678085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347994163.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 74139678085 in words is "seventy-four billion, one hundred thirty-nine million, six hundred seventy-eight thousand, eighty-five".