82421529372 has 384 divisors, whose sum is σ = 277071872000. Its totient is φ = 21032524800.

The previous prime is 82421529361. The next prime is 82421529401. The reversal of 82421529372 is 27392512428.

82421529372 is a `hidden beast` number, since 8 + 242 + 15 + 29 + 372 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14925972 + ... + 14931492.

Almost surely, 2^82421529372 is an apocalyptic number.

It is a pronic number, being equal to 287091×287092.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82421529372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138535936000).

82421529372 is an abundant number, since it is smaller than the sum of its proper divisors (194650342628).

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

82421529372 is a wasteful number, since it uses less digits than its factorization.

82421529372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599 (or 5577 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 82421529372 in words is "eighty-two billion, four hundred twenty-one million, five hundred twenty-nine thousand, three hundred seventy-two".