65109340911854 has 4 divisors (see below), whose sum is σ = 97664011367784. Its totient is φ = 32554670455926.

The previous prime is 65109340911833. The next prime is 65109340911859. The reversal of 65109340911854 is 45811904390156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 65109340911854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65109340911859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16277335227962 + ... + 16277335227965.

It is an arithmetic number, because the mean of its divisors is an integer number (24416002841946).

Almost surely, 2^{65109340911854} is an apocalyptic number.

65109340911854 is a deficient number, since it is larger than the sum of its proper divisors (32554670455930).

65109340911854 is a wasteful number, since it uses less digits than its factorization.

65109340911854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32554670455929.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 65109340911854 in words is "sixty-five trillion, one hundred nine billion, three hundred forty million, nine hundred eleven thousand, eight hundred fifty-four".