72508885573 has 16 divisors (see below), whose sum is σ = 73878811776. Its totient is φ = 71152029760.

The previous prime is 72508885549. The next prime is 72508885577. The reversal of 72508885573 is 37558880527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72508885573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72508885577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10673808 + ... + 10680598.

It is an arithmetic number, because the mean of its divisors is an integer number (4617425736).

Almost surely, 2^72508885573 is an apocalyptic number.

It is an amenable number.

72508885573 is a deficient number, since it is larger than the sum of its proper divisors (1369926203).

72508885573 is a wasteful number, since it uses less digits than its factorization.

72508885573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7724.

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 72508885573 in words is "seventy-two billion, five hundred eight million, eight hundred eighty-five thousand, five hundred seventy-three".