72122841528 has 32 divisors (see below), whose sum is σ = 180607151760. Its totient is φ = 24000940800.

The previous prime is 72122841517. The next prime is 72122841541. The reversal of 72122841528 is 82514822127.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 72122841528.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485675 + ... + 2514522.

Almost surely, 2^72122841528 is an apocalyptic number.

It is an amenable number.

72122841528 is an abundant number, since it is smaller than the sum of its proper divisors (108484310232).

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

72122841528 is a wasteful number, since it uses less digits than its factorization.

72122841528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000807 (or 5000803 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The spelling of 72122841528 in words is "seventy-two billion, one hundred twenty-two million, eight hundred forty-one thousand, five hundred twenty-eight".