79828998040 has 128 divisors (see below), whose sum is σ = 200318469120. Its totient is φ = 28381926400.

The previous prime is 79828998037. The next prime is 79828998049. The reversal of 79828998040 is 4089982897.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79828998049) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 35589159 + ... + 35591401.

It is an arithmetic number, because the mean of its divisors is an integer number (1564988040).

Almost surely, 2^79828998040 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 79828998040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100159234560).

79828998040 is an abundant number, since it is smaller than the sum of its proper divisors (120489471080).

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

79828998040 is a wasteful number, since it uses less digits than its factorization.

79828998040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4029 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 64.

The spelling of 79828998040 in words is "seventy-nine billion, eight hundred twenty-eight million, nine hundred ninety-eight thousand, forty".