64224511616 has 48 divisors (see below), whose sum is σ = 135916381590. Its totient is φ = 30223282176.

The previous prime is 64224511613. The next prime is 64224511619. The reversal of 64224511616 is 61611542246.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64224511613) and next prime (64224511619).

It can be written as a sum of positive squares in 3 ways, for example, as 52624360000 + 11600151616 = 229400^2 + 107704^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64224511616.

It is not an unprimeable number, because it can be changed into a prime (64224511613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 831095 + ... + 905078.

Almost surely, 2^64224511616 is an apocalyptic number.

It is an amenable number.

64224511616 is an abundant number, since it is smaller than the sum of its proper divisors (71691869974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64224511616 is a wasteful number, since it uses less digits than its factorization.

64224511616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736221 (or 1736192 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The spelling of 64224511616 in words is "sixty-four billion, two hundred twenty-four million, five hundred eleven thousand, six hundred sixteen".