6509087481 has 16 divisors (see below), whose sum is σ = 9545243904. Its totient is φ = 3920365824.

The previous prime is 6509087479. The next prime is 6509087489. The reversal of 6509087481 is 1847809056.

It is not a de Polignac number, because 6509087481 - 2¹ = 6509087479 is a prime.

It is a super-2 number, since 2×6509087481² = 84736439670621850722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6509087481.

It is not an unprimeable number, because it can be changed into a prime (6509087489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1773696 + ... + 1777361.

It is an arithmetic number, because the mean of its divisors is an integer number (596577744).

Almost surely, 2^6509087481 is an apocalyptic number.

It is an amenable number.

6509087481 is a deficient number, since it is larger than the sum of its proper divisors (3036156423).

6509087481 is a wasteful number, since it uses less digits than its factorization.

6509087481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551120.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 6509087481 is about 80678.9159632180. The cubic root of 6509087481 is about 1867.1248945455.

The spelling of 6509087481 in words is "six billion, five hundred nine million, eighty-seven thousand, four hundred eighty-one".