82720512000 has 1152 divisors, whose sum is σ = 357166817280. Its totient is φ = 18004377600.

The previous prime is 82720511933. The next prime is 82720512029. The reversal of 82720512000 is 21502728.

82720512000 is a `hidden beast` number, since 82 + 72 + 0 + 512 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 370943889 + ... + 370944111.

It is an arithmetic number, because the mean of its divisors is an integer number (310040640).

Almost surely, 2^82720512000 is an apocalyptic number.

82720512000 is a gapful number since it is divisible by the number (80) 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 82720512000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178583408640).

82720512000 is an abundant number, since it is smaller than the sum of its proper divisors (274446305280).

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

82720512000 is a wasteful number, since it uses less digits than its factorization.

82720512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The spelling of 82720512000 in words is "eighty-two billion, seven hundred twenty million, five hundred twelve thousand".