74899299847 has 4 divisors (see below), whose sum is σ = 78841368280. Its totient is φ = 70957231416.

The previous prime is 74899299793. The next prime is 74899299851.

74899299847 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74899299847 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 (74899299347) 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, 1971034188 + ... + 1971034225.

It is an arithmetic number, because the mean of its divisors is an integer number (19710342070).

Almost surely, 2^74899299847 is an apocalyptic number.

74899299847 is a deficient number, since it is larger than the sum of its proper divisors (3942068433).

74899299847 is a wasteful number, since it uses less digits than its factorization.

74899299847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942068432.

The product of its digits is 658409472, while the sum is 76.

The spelling of 74899299847 in words is "seventy-four billion, eight hundred ninety-nine million, two hundred ninety-nine thousand, eight hundred forty-seven".