6499379237409 has 24 divisors (see below), whose sum is σ = 9407316984000. Its totient is φ = 4324001324832.

The previous prime is 6499379237381. The next prime is 6499379237419. The reversal of 6499379237409 is 9047329739946.

6499379237409 is a `hidden beast` number, since 6 + 49 + 93 + 7 + 92 + 3 + 7 + 409 = 666.

It is not a de Polignac number, because 6499379237409 - 2⁹ = 6499379236897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6499379237419) 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 23 ways as a sum of consecutive naturals, for example, 131934427 + ... + 131983679.

It is an arithmetic number, because the mean of its divisors is an integer number (391971541000).

Almost surely, 2^{6499379237409} is an apocalyptic number.

It is an amenable number.

6499379237409 is a deficient number, since it is larger than the sum of its proper divisors (2907937746591).

6499379237409 is a wasteful number, since it uses less digits than its factorization.

6499379237409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79141 (or 79138 counting only the distinct ones).

The product of its (nonzero) digits is 555532992, while the sum is 72.

The spelling of 6499379237409 in words is "six trillion, four hundred ninety-nine billion, three hundred seventy-nine million, two hundred thirty-seven thousand, four hundred nine".