6491306151 has 12 divisors (see below), whose sum is σ = 10228725000. Its totient is φ = 3934124880.

The previous prime is 6491306141. The next prime is 6491306153. The reversal of 6491306151 is 1516031946.

6491306151 is a `hidden beast` number, since 6 + 4 + 9 + 1 + 30 + 615 + 1 = 666.

It is not a de Polignac number, because 6491306151 - 2¹⁰ = 6491305127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491306153) 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 11 ways as a sum of consecutive naturals, for example, 32784276 + ... + 32784473.

It is an arithmetic number, because the mean of its divisors is an integer number (852393750).

Almost surely, 2^6491306151 is an apocalyptic number.

6491306151 is a deficient number, since it is larger than the sum of its proper divisors (3737418849).

6491306151 is a wasteful number, since it uses less digits than its factorization.

6491306151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65568766 (or 65568763 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 6491306151 is about 80568.6424795652. The cubic root of 6491306151 is about 1865.4231587534.

The spelling of 6491306151 in words is "six billion, four hundred ninety-one million, three hundred six thousand, one hundred fifty-one".