6457140440 has 64 divisors (see below), whose sum is σ = 14752964160. Its totient is φ = 2543063040.

The previous prime is 6457140419. The next prime is 6457140457. The reversal of 6457140440 is 440417546.

It is a self number, because there is not a number n which added to its sum of digits gives 6457140440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3682604 + ... + 3684356.

It is an arithmetic number, because the mean of its divisors is an integer number (230515065).

Almost surely, 2^6457140440 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 6457140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7376482080).

6457140440 is an abundant number, since it is smaller than the sum of its proper divisors (8295823720).

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

6457140440 is a wasteful number, since it uses less digits than its factorization.

6457140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3128 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 6457140440 is about 80356.3341622800. The cubic root of 6457140440 is about 1862.1446376354.

Adding to 6457140440 its reverse (440417546), we get a palindrome (6897557986).

The spelling of 6457140440 in words is "six billion, four hundred fifty-seven million, one hundred forty thousand, four hundred forty".