74874447847 has 8 divisors (see below), whose sum is σ = 80648120960. Its totient is φ = 69284066040.

The previous prime is 74874447799. The next prime is 74874447889.

It is a happy number.

74874447847 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 not a de Polignac number, because 74874447847 - 2⁷ = 74874447719 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 (74874447047) 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, 45821979 + ... + 45823612.

It is an arithmetic number, because the mean of its divisors is an integer number (10081015120).

Almost surely, 2^74874447847 is an apocalyptic number.

74874447847 is a deficient number, since it is larger than the sum of its proper divisors (5773673113).

74874447847 is a wasteful number, since it uses less digits than its factorization.

74874447847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91645653.

The product of its digits is 157351936, while the sum is 64.

The spelling of 74874447847 in words is "seventy-four billion, eight hundred seventy-four million, four hundred forty-seven thousand, eight hundred forty-seven".