1679946253847 has 4 divisors (see below), whose sum is σ = 1687156323840. Its totient is φ = 1672736183856.

The previous prime is 1679946253819. The next prime is 1679946253849. The reversal of 1679946253847 is 7483526499761.

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-1679946253847 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 (1679946253849) 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, 3605034647 + ... + 3605035112.

It is an arithmetic number, because the mean of its divisors is an integer number (421789080960).

Almost surely, 2^{1679946253847} is an apocalyptic number.

1679946253847 is a deficient number, since it is larger than the sum of its proper divisors (7210069993).

1679946253847 is an equidigital number, since it uses as much as digits as its factorization.

1679946253847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210069992.

The product of its digits is 548674560, while the sum is 71.

The spelling of 1679946253847 in words is "one trillion, six hundred seventy-nine billion, nine hundred forty-six million, two hundred fifty-three thousand, eight hundred forty-seven".