82551028240 has 40 divisors (see below), whose sum is σ = 202032783360. Its totient is φ = 31282494336.

The previous prime is 82551028211. The next prime is 82551028253. The reversal of 82551028240 is 4282015528.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 82551028240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27153424 + ... + 27156463.

It is an arithmetic number, because the mean of its divisors is an integer number (5050819584).

Almost surely, 2^82551028240 is an apocalyptic number.

82551028240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82551028240 is an abundant number, since it is smaller than the sum of its proper divisors (119481755120).

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

82551028240 is a wasteful number, since it uses less digits than its factorization.

82551028240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54309919 (or 54309913 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The spelling of 82551028240 in words is "eighty-two billion, five hundred fifty-one million, twenty-eight thousand, two hundred forty".