74378487347 has 4 divisors (see below), whose sum is σ = 74429678400. Its totient is φ = 74327296296.

The previous prime is 74378487343. The next prime is 74378487361.

74378487347 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 not a de Polignac number, because 74378487347 - 2² = 74378487343 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 74378487347.

It is not an unprimeable number, because it can be changed into a prime (74378487341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25593347 + ... + 25596252.

It is an arithmetic number, because the mean of its divisors is an integer number (18607419600).

Almost surely, 2^74378487347 is an apocalyptic number.

74378487347 is a deficient number, since it is larger than the sum of its proper divisors (51191053).

74378487347 is a wasteful number, since it uses less digits than its factorization.

74378487347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51191052.

The product of its digits is 88510464, while the sum is 62.

The spelling of 74378487347 in words is "seventy-four billion, three hundred seventy-eight million, four hundred eighty-seven thousand, three hundred forty-seven".