65264728945 has 8 divisors (see below), whose sum is σ = 84342111336. Its totient is φ = 48195492096.

The previous prime is 65264728939. The next prime is 65264728981. The reversal of 65264728945 is 54982746256.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 829921 + 65263899024 = 911^2 + 255468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65264728945 - 2¹⁹ = 65264204657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65264728945.

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 7 ways as a sum of consecutive naturals, for example, 502036312 + ... + 502036441.

It is an arithmetic number, because the mean of its divisors is an integer number (10542763917).

Almost surely, 2^65264728945 is an apocalyptic number.

65264728945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65264728945 is a deficient number, since it is larger than the sum of its proper divisors (19077382391).

65264728945 is a wasteful number, since it uses less digits than its factorization.

65264728945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004072771.

The product of its digits is 29030400, while the sum is 58.

The spelling of 65264728945 in words is "sixty-five billion, two hundred sixty-four million, seven hundred twenty-eight thousand, nine hundred forty-five".