79874780128 has 96 divisors (see below), whose sum is σ = 184981732992. Its totient is φ = 33471014400.

The previous prime is 79874780087. The next prime is 79874780131. The reversal of 79874780128 is 82108747897.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3700375 + ... + 3721897.

It is an arithmetic number, because the mean of its divisors is an integer number (1926893052).

Almost surely, 2^79874780128 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 79874780128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92490866496).

79874780128 is an abundant number, since it is smaller than the sum of its proper divisors (105106952864).

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

79874780128 is a wasteful number, since it uses less digits than its factorization.

79874780128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22368 (or 22360 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 61.

The spelling of 79874780128 in words is "seventy-nine billion, eight hundred seventy-four million, seven hundred eighty thousand, one hundred twenty-eight".