73224292644 has 36 divisors (see below), whose sum is σ = 195982667244. Its totient is φ = 22972326912.

The previous prime is 73224292567. The next prime is 73224292657. The reversal of 73224292644 is 44629242237.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28740420900 + 44483871744 = 169530^2 + 210912^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 73224292644.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59823157 + ... + 59824380.

It is an arithmetic number, because the mean of its divisors is an integer number (5443962979).

Almost surely, 2^73224292644 is an apocalyptic number.

It is an amenable number.

73224292644 is an abundant number, since it is smaller than the sum of its proper divisors (122758374600).

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

73224292644 is a wasteful number, since it uses less digits than its factorization.

73224292644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119647564 (or 119647559 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The spelling of 73224292644 in words is "seventy-three billion, two hundred twenty-four million, two hundred ninety-two thousand, six hundred forty-four".