65820720452 has 12 divisors (see below), whose sum is σ = 115188190656. Its totient is φ = 32909808840.

The previous prime is 65820720451. The next prime is 65820720499. The reversal of 65820720452 is 25402702856.

It is not an unprimeable number, because it can be changed into a prime (65820720451) by changing a digit.

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, 255377 + ... + 443687.

It is an arithmetic number, because the mean of its divisors is an integer number (9599015888).

Almost surely, 2^65820720452 is an apocalyptic number.

It is an amenable number.

65820720452 is a deficient number, since it is larger than the sum of its proper divisors (49367470204).

65820720452 is a wasteful number, since it uses less digits than its factorization.

65820720452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275698 (or 275696 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 65820720452 in words is "sixty-five billion, eight hundred twenty million, seven hundred twenty thousand, four hundred fifty-two".