84722126064 has 80 divisors (see below), whose sum is σ = 221769808800. Its totient is φ = 27868151808.

The previous prime is 84722126063. The next prime is 84722126087. The reversal of 84722126064 is 46062122748.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84722126063) 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 15 ways as a sum of consecutive naturals, for example, 1207992 + ... + 1276200.

It is an arithmetic number, because the mean of its divisors is an integer number (2772122610).

Almost surely, 2^84722126064 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 84722126064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110884904400).

84722126064 is an abundant number, since it is smaller than the sum of its proper divisors (137047682736).

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

84722126064 is a wasteful number, since it uses less digits than its factorization.

84722126064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68562 (or 68556 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 84722126064 in words is "eighty-four billion, seven hundred twenty-two million, one hundred twenty-six thousand, sixty-four".