6481321510 has 16 divisors (see below), whose sum is σ = 11675328336. Its totient is φ = 2590539808.

The previous prime is 6481321507. The next prime is 6481321529. The reversal of 6481321510 is 151231846.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 234877 + ... + 261016.

It is an arithmetic number, because the mean of its divisors is an integer number (729708021).

Almost surely, 2^6481321510 is an apocalyptic number.

6481321510 is a deficient number, since it is larger than the sum of its proper divisors (5194006826).

6481321510 is a wasteful number, since it uses less digits than its factorization.

6481321510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497207.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 6481321510 is about 80506.6550665223. The cubic root of 6481321510 is about 1864.4662307243.

The spelling of 6481321510 in words is "six billion, four hundred eighty-one million, three hundred twenty-one thousand, five hundred ten".