74145854147 has 8 divisors (see below), whose sum is σ = 79256651040. Its totient is φ = 69192312640.

The previous prime is 74145854137. The next prime is 74145854173.

74145854147 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 74145854147 - 2²⁰ = 74144805571 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74145854095 and 74145854104.

It is not an unprimeable number, because it can be changed into a prime (74145854137) 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, 39312872 + ... + 39314757.

It is an arithmetic number, because the mean of its divisors is an integer number (9907081380).

Almost surely, 2^74145854147 is an apocalyptic number.

74145854147 is a deficient number, since it is larger than the sum of its proper divisors (5110796893).

74145854147 is a wasteful number, since it uses less digits than its factorization.

74145854147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78627693.

The product of its digits is 2508800, while the sum is 50.

The spelling of 74145854147 in words is "seventy-four billion, one hundred forty-five million, eight hundred fifty-four thousand, one hundred forty-seven".