6509972387 has 2 divisors, whose sum is σ = 6509972388. Its totient is φ = 6509972386.

The previous prime is 6509972369. The next prime is 6509972393. The reversal of 6509972387 is 7832799056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6509972387 - 2²⁴ = 6493195171 is a prime.

It is not a weakly prime, because it can be changed into another prime (6509972347) 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 as a sum of consecutive naturals, namely, 3254986193 + 3254986194.

It is an arithmetic number, because the mean of its divisors is an integer number (3254986194).

Almost surely, 2^6509972387 is an apocalyptic number.

6509972387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6509972387 is an equidigital number, since it uses as much as digits as its factorization.

6509972387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The square root of 6509972387 is about 80684.3998986173. The cubic root of 6509972387 is about 1867.2095021631.

The spelling of 6509972387 in words is "six billion, five hundred nine million, nine hundred seventy-two thousand, three hundred eighty-seven".