65513670198 has 16 divisors (see below), whose sum is σ = 131034017520. Its totient is φ = 21836777216.

The previous prime is 65513670197. The next prime is 65513670203. The reversal of 65513670198 is 89107631556.

65513670198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65513670198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65513670197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145815 + ... + 390242.

It is an arithmetic number, because the mean of its divisors is an integer number (8189626095).

Almost surely, 2^65513670198 is an apocalyptic number.

65513670198 is an abundant number, since it is smaller than the sum of its proper divisors (65520347322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65513670198 is a wasteful number, since it uses less digits than its factorization.

65513670198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556431.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 65513670198 in words is "sixty-five billion, five hundred thirteen million, six hundred seventy thousand, one hundred ninety-eight".