6489784520740 has 48 divisors (see below), whose sum is σ = 14271344535168. Its totient is φ = 2474273919744.

The previous prime is 6489784520689. The next prime is 6489784520749. The reversal of 6489784520740 is 470254879846.

It is a super-2 number, since 2×6489784520740² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6489784520749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24796017 + ... + 25056376.

It is an arithmetic number, because the mean of its divisors is an integer number (297319677816).

Almost surely, 2^{6489784520740} is an apocalyptic number.

It is an amenable number.

6489784520740 is an abundant number, since it is smaller than the sum of its proper divisors (7781560014428).

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

6489784520740 is a wasteful number, since it uses less digits than its factorization.

6489784520740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49852708 (or 49852706 counting only the distinct ones).

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 6489784520740 in words is "six trillion, four hundred eighty-nine billion, seven hundred eighty-four million, five hundred twenty thousand, seven hundred forty".