6513244740 has 36 divisors (see below), whose sum is σ = 19756842924. Its totient is φ = 1736865216.

The previous prime is 6513244733. The next prime is 6513244831. The reversal of 6513244740 is 474423156.

It can be written as a sum of positive squares in 2 ways, for example, as 2545000704 + 3968244036 = 50448^2 + 62994^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 6513244695 and 6513244704.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18092167 + ... + 18092526.

Almost surely, 2^6513244740 is an apocalyptic number.

6513244740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6513244740 is an abundant number, since it is smaller than the sum of its proper divisors (13243598184).

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

6513244740 is a wasteful number, since it uses less digits than its factorization.

6513244740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36184708 (or 36184703 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 6513244740 is about 80704.6760727035. The cubic root of 6513244740 is about 1867.5223117392.

Adding to 6513244740 its reverse (474423156), we get a palindrome (6987667896).

The spelling of 6513244740 in words is "six billion, five hundred thirteen million, two hundred forty-four thousand, seven hundred forty".