72184373664 has 48 divisors (see below), whose sum is σ = 204059675232. Its totient is φ = 22210576128.

The previous prime is 72184373663. The next prime is 72184373687. The reversal of 72184373664 is 46637348127.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (72184373663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28918774 + ... + 28921269.

It is an arithmetic number, because the mean of its divisors is an integer number (4251243234).

Almost surely, 2^72184373664 is an apocalyptic number.

It is an amenable number.

72184373664 is an abundant number, since it is smaller than the sum of its proper divisors (131875301568).

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

72184373664 is a wasteful number, since it uses less digits than its factorization.

72184373664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57840069 (or 57840061 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 51.

The spelling of 72184373664 in words is "seventy-two billion, one hundred eighty-four million, three hundred seventy-three thousand, six hundred sixty-four".