5978861639191 has 4 divisors (see below), whose sum is σ = 6832984730512. Its totient is φ = 5124738547872.

The previous prime is 5978861639183. The next prime is 5978861639249. The reversal of 5978861639191 is 1919361688795.

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 5978861639191 - 2³ = 5978861639183 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 (5978861633191) 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, 427061545650 + ... + 427061545663.

It is an arithmetic number, because the mean of its divisors is an integer number (1708246182628).

Almost surely, 2^{5978861639191} is an apocalyptic number.

5978861639191 is a deficient number, since it is larger than the sum of its proper divisors (854123091321).

5978861639191 is an equidigital number, since it uses as much as digits as its factorization.

5978861639191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854123091320.

The product of its digits is 176359680, while the sum is 73.

The spelling of 5978861639191 in words is "five trillion, nine hundred seventy-eight billion, eight hundred sixty-one million, six hundred thirty-nine thousand, one hundred ninety-one".