65773796406 has 12 divisors (see below), whose sum is σ = 131548849236. Its totient is φ = 21924389400.

The previous prime is 65773796381. The next prime is 65773796411. The reversal of 65773796406 is 60469737756.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 65773796406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575856 + ... + 680556.

It is an arithmetic number, because the mean of its divisors is an integer number (10962404103).

Almost surely, 2^65773796406 is an apocalyptic number.

65773796406 is an abundant number, since it is smaller than the sum of its proper divisors (65775052830).

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

65773796406 is an frugal number, since it uses more digits than its factorization.

65773796406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209407 (or 104706 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 60.

The spelling of 65773796406 in words is "sixty-five billion, seven hundred seventy-three million, seven hundred ninety-six thousand, four hundred six".