65211041944 has 8 divisors (see below), whose sum is σ = 122270703660. Its totient is φ = 32605520968.

The previous prime is 65211041899. The next prime is 65211041983. The reversal of 65211041944 is 44914011256.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 4075690114 + ... + 4075690129.

Almost surely, 2^65211041944 is an apocalyptic number.

It is an amenable number.

65211041944 is a deficient number, since it is larger than the sum of its proper divisors (57059661716).

65211041944 is a wasteful number, since it uses less digits than its factorization.

65211041944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151380249 (or 8151380245 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 65211041944 in words is "sixty-five billion, two hundred eleven million, forty-one thousand, nine hundred forty-four".