79221105152 has 90 divisors (see below), whose sum is σ = 184234012677. Its totient is φ = 33932795904.

The previous prime is 79221105143. The next prime is 79221105179. The reversal of 79221105152 is 25150112297.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 79217479936 + 3625216 = 281456^2 + 1904^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199024.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 44580488 + ... + 44582264.

Almost surely, 2^79221105152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79221105152

79221105152 is an abundant number, since it is smaller than the sum of its proper divisors (105012907525).

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

79221105152 is an frugal number, since it uses more digits than its factorization.

79221105152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 79221105152 in words is "seventy-nine billion, two hundred twenty-one million, one hundred five thousand, one hundred fifty-two".