65440255436 has 12 divisors (see below), whose sum is σ = 114522255120. Its totient is φ = 32719611120.

The previous prime is 65440255333. The next prime is 65440255459. The reversal of 65440255436 is 63455204456.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 371570 + ... + 518598.

It is an arithmetic number, because the mean of its divisors is an integer number (9543521260).

Almost surely, 2^65440255436 is an apocalyptic number.

It is an amenable number.

65440255436 is a deficient number, since it is larger than the sum of its proper divisors (49081999684).

65440255436 is a wasteful number, since it uses less digits than its factorization.

65440255436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258304 (or 258302 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 65440255436 in words is "sixty-five billion, four hundred forty million, two hundred fifty-five thousand, four hundred thirty-six".