65995944406 has 32 divisors (see below), whose sum is σ = 113629614912. Its totient is φ = 28160655360.

The previous prime is 65995944373. The next prime is 65995944451. The reversal of 65995944406 is 60444959956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13529640 + ... + 13534516.

It is an arithmetic number, because the mean of its divisors is an integer number (3550925466).

Almost surely, 2^65995944406 is an apocalyptic number.

65995944406 is a deficient number, since it is larger than the sum of its proper divisors (47633670506).

65995944406 is a wasteful number, since it uses less digits than its factorization.

65995944406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8904.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 65995944406 in words is "sixty-five billion, nine hundred ninety-five million, nine hundred forty-four thousand, four hundred six".