64979825198 has 16 divisors (see below), whose sum is σ = 98049352176. Its totient is φ = 32296770240.

The previous prime is 64979825189. The next prime is 64979825201. The reversal of 64979825198 is 89152897946.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2837213 + ... + 2860023.

It is an arithmetic number, because the mean of its divisors is an integer number (6128084511).

Almost surely, 2^64979825198 is an apocalyptic number.

64979825198 is a deficient number, since it is larger than the sum of its proper divisors (33069526978).

64979825198 is a wasteful number, since it uses less digits than its factorization.

64979825198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31219.

The product of its digits is 78382080, while the sum is 68.

The spelling of 64979825198 in words is "sixty-four billion, nine hundred seventy-nine million, eight hundred twenty-five thousand, one hundred ninety-eight".