6456543140 has 48 divisors (see below), whose sum is σ = 14324116800. Its totient is φ = 2437817472.

The previous prime is 6456543133. The next prime is 6456543193. The reversal of 6456543140 is 413456546.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 6456543094 and 6456543103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74591 + ... + 135929.

It is an arithmetic number, because the mean of its divisors is an integer number (298419100).

Almost surely, 2^6456543140 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 6456543140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7162058400).

6456543140 is an abundant number, since it is smaller than the sum of its proper divisors (7867573660).

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

6456543140 is a wasteful number, since it uses less digits than its factorization.

6456543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61644 (or 61642 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 6456543140 is about 80352.6175055922. The cubic root of 6456543140 is about 1862.0872183438.

Adding to 6456543140 its reverse (413456546), we get a palindrome (6869999686).

The spelling of 6456543140 in words is "six billion, four hundred fifty-six million, five hundred forty-three thousand, one hundred forty".