79782210157872 has 160 divisors (see below), whose sum is σ = 215721717053440. Its totient is φ = 25377203681280.

The previous prime is 79782210157777. The next prime is 79782210157879. The reversal of 79782210157872 is 27875101228797.

It is not an unprimeable number, because it can be changed into a prime (79782210157879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437337654 + ... + 437520042.

It is an arithmetic number, because the mean of its divisors is an integer number (1348260731584).

Almost surely, 2^{79782210157872} 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 79782210157872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107860858526720).

79782210157872 is an abundant number, since it is smaller than the sum of its proper divisors (135939506895568).

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

79782210157872 is a wasteful number, since it uses less digits than its factorization.

79782210157872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186531 (or 186525 counting only the distinct ones).

The product of its (nonzero) digits is 55319040, while the sum is 66.

The spelling of 79782210157872 in words is "seventy-nine trillion, seven hundred eighty-two billion, two hundred ten million, one hundred fifty-seven thousand, eight hundred seventy-two".