6530440356 has 72 divisors (see below), whose sum is σ = 18494933184. Its totient is φ = 1925432640.

The previous prime is 6530440349. The next prime is 6530440381.

6530440356 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6530440356.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208200 + ... + 237503.

It is an arithmetic number, because the mean of its divisors is an integer number (256874072).

Almost surely, 2^6530440356 is an apocalyptic number.

6530440356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6530440356 is an abundant number, since it is smaller than the sum of its proper divisors (11964492828).

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

6530440356 is a wasteful number, since it uses less digits than its factorization.

6530440356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445761 (or 445756 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The square root of 6530440356 is about 80811.1400488819. The cubic root of 6530440356 is about 1869.1643492858.

The spelling of 6530440356 in words is "six billion, five hundred thirty million, four hundred forty thousand, three hundred fifty-six".