74879999997847 has 8 divisors (see below), whose sum is σ = 84504075233040. Its totient is φ = 65725391847360.

The previous prime is 74879999997779. The next prime is 74879999997851.

74879999997847 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74879999997847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74879999997847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74879999997947) 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, 117366770838 + ... + 117366771475.

It is an arithmetic number, because the mean of its divisors is an integer number (10563009404130).

Almost surely, 2^{74879999997847} is an apocalyptic number.

74879999997847 is a deficient number, since it is larger than the sum of its proper divisors (9624075235193).

74879999997847 is a wasteful number, since it uses less digits than its factorization.

74879999997847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234733542353.

The product of its digits is 1306613597184, while the sum is 106.

The spelling of 74879999997847 in words is "seventy-four trillion, eight hundred seventy-nine billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, eight hundred forty-seven".