79522821000 has 768 divisors, whose sum is σ = 333372049920. Its totient is φ = 16680960000.

The previous prime is 79522820987. The next prime is 79522821097. The reversal of 79522821000 is 12822597.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 191 ways as a sum of consecutive naturals, for example, 43910095 + ... + 43911905.

It is an arithmetic number, because the mean of its divisors is an integer number (434078190).

Almost surely, 2^79522821000 is an apocalyptic number.

79522821000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79522821000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166686024960).

79522821000 is an abundant number, since it is smaller than the sum of its proper divisors (253849228920).

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

79522821000 is a wasteful number, since it uses less digits than its factorization.

79522821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 79522821000 in words is "seventy-nine billion, five hundred twenty-two million, eight hundred twenty-one thousand".