65280436772 has 6 divisors (see below), whose sum is σ = 114240764358. Its totient is φ = 32640218384.

The previous prime is 65280436733. The next prime is 65280436783. The reversal of 65280436772 is 27763408256.

It can be written as a sum of positive squares in only one way, i.e., 41365051456 + 23915385316 = 203384^2 + 154646^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65280436772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160054593 + ... + 8160054600.

It is an arithmetic number, because the mean of its divisors is an integer number (19040127393).

Almost surely, 2^65280436772 is an apocalyptic number.

It is an amenable number.

65280436772 is a deficient number, since it is larger than the sum of its proper divisors (48960327586).

65280436772 is a wasteful number, since it uses less digits than its factorization.

65280436772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16320109197 (or 16320109195 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 65280436772 in words is "sixty-five billion, two hundred eighty million, four hundred thirty-six thousand, seven hundred seventy-two".