65221000552 has 16 divisors (see below), whose sum is σ = 122303648160. Its totient is φ = 32606694384.

The previous prime is 65221000517. The next prime is 65221000573. The reversal of 65221000552 is 25500012256.

It is a self number, because there is not a number n which added to its sum of digits gives 65221000552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402238 + ... + 540589.

It is an arithmetic number, because the mean of its divisors is an integer number (7643978010).

Almost surely, 2^65221000552 is an apocalyptic number.

It is an amenable number.

65221000552 is a deficient number, since it is larger than the sum of its proper divisors (57082647608).

65221000552 is a wasteful number, since it uses less digits than its factorization.

65221000552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951480 (or 951476 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 65221000552 in words is "sixty-five billion, two hundred twenty-one million, five hundred fifty-two", and thus it is an aban number.