82448488640 has 56 divisors (see below), whose sum is σ = 224377678752. Its totient is φ = 28268052480.

The previous prime is 82448488637. The next prime is 82448488663. The reversal of 82448488640 is 4688484428.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 18401441 + ... + 18405920.

Almost surely, 2^82448488640 is an apocalyptic number.

82448488640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

82448488640 is an abundant number, since it is smaller than the sum of its proper divisors (141929190112).

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

82448488640 is a wasteful number, since it uses less digits than its factorization.

82448488640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36807385 (or 36807375 counting only the distinct ones).

The product of its (nonzero) digits is 12582912, while the sum is 56.

The spelling of 82448488640 in words is "eighty-two billion, four hundred forty-eight million, four hundred eighty-eight thousand, six hundred forty".