578311071887 has 4 divisors (see below), whose sum is σ = 579488895336. Its totient is φ = 577133248440.

The previous prime is 578311071859. The next prime is 578311071907. The reversal of 578311071887 is 788170113875.

It is a happy number.

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 578311071887 - 2¹² = 578311067791 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 (578311073887) 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, 588910988 + ... + 588911969.

It is an arithmetic number, because the mean of its divisors is an integer number (144872223834).

Almost surely, 2^578311071887 is an apocalyptic number.

578311071887 is a deficient number, since it is larger than the sum of its proper divisors (1177823449).

578311071887 is a wasteful number, since it uses less digits than its factorization.

578311071887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177823448.

The product of its (nonzero) digits is 2634240, while the sum is 56.

The spelling of 578311071887 in words is "five hundred seventy-eight billion, three hundred eleven million, seventy-one thousand, eight hundred eighty-seven".