6499134240 has 96 divisors (see below), whose sum is σ = 20560490496. Its totient is φ = 1725634560.

The previous prime is 6499134227. The next prime is 6499134247. The reversal of 6499134240 is 424319946.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6499134192 and 6499134201.

It is not an unprimeable number, because it can be changed into a prime (6499134247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82785 + ... + 140895.

It is an arithmetic number, because the mean of its divisors is an integer number (214171776).

Almost surely, 2^6499134240 is an apocalyptic number.

6499134240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6499134240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10280245248).

6499134240 is an abundant number, since it is smaller than the sum of its proper divisors (14061356256).

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

6499134240 is a wasteful number, since it uses less digits than its factorization.

6499134240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58362 (or 58354 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 6499134240 is about 80617.2080885961. The cubic root of 6499134240 is about 1866.1727168102.

The spelling of 6499134240 in words is "six billion, four hundred ninety-nine million, one hundred thirty-four thousand, two hundred forty".