82475746440 has 128 divisors (see below), whose sum is σ = 261906048000. Its totient is φ = 20719473408.

The previous prime is 82475746403. The next prime is 82475746447. The reversal of 82475746440 is 4464757428.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82475746447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307077 + ... + 509163.

It is an arithmetic number, because the mean of its divisors is an integer number (2046141000).

Almost surely, 2^82475746440 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 82475746440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130953024000).

82475746440 is an abundant number, since it is smaller than the sum of its proper divisors (179430301560).

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

82475746440 is a wasteful number, since it uses less digits than its factorization.

82475746440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202299 (or 202295 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 51.

The spelling of 82475746440 in words is "eighty-two billion, four hundred seventy-five million, seven hundred forty-six thousand, four hundred forty".