73501716544 has 21 divisors (see below), whose sum is σ = 145859272797. Its totient is φ = 36749773824.

The previous prime is 73501716499. The next prime is 73501716551. The reversal of 73501716544 is 44561710537.

The square root of 73501716544 is 271112.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 70072442944 + 3429273600 = 264712^2 + 58560^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73501716544.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2151952 + ... + 2185840.

It is an arithmetic number, because the mean of its divisors is an integer number (6945679657).

Almost surely, 2^73501716544 is an apocalyptic number.

73501716544 is the 271112-nd square number.

It is an amenable number.

73501716544 is a deficient number, since it is larger than the sum of its proper divisors (72357556253).

73501716544 is an frugal number, since it uses more digits than its factorization.

73501716544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67790 (or 33891 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 73501716544 in words is "seventy-three billion, five hundred one million, seven hundred sixteen thousand, five hundred forty-four".