16574640347 has 4 divisors (see below), whose sum is σ = 16598908440. Its totient is φ = 16550372256.

The previous prime is 16574640343. The next prime is 16574640349. The reversal of 16574640347 is 74304647561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74304647561 = 79 ⋅940565159.

It is a cyclic number.

It is not a de Polignac number, because 16574640347 - 2² = 16574640343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16574640343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12133022 + ... + 12134387.

It is an arithmetic number, because the mean of its divisors is an integer number (4149727110).

Almost surely, 2^16574640347 is an apocalyptic number.

16574640347 is a deficient number, since it is larger than the sum of its proper divisors (24268093).

16574640347 is an equidigital number, since it uses as much as digits as its factorization.

16574640347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24268092.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 16574640347 in words is "sixteen billion, five hundred seventy-four million, six hundred forty thousand, three hundred forty-seven".