6351611655 has 24 divisors (see below), whose sum is σ = 10795549392. Its totient is φ = 3188257792.

The previous prime is 6351611633. The next prime is 6351611677. The reversal of 6351611655 is 5561161536.

6351611655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6351611633) and next prime (6351611677).

It is not a de Polignac number, because 6351611655 - 2¹⁰ = 6351610631 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 728262 + ... + 736931.

It is an arithmetic number, because the mean of its divisors is an integer number (449814558).

Almost surely, 2^6351611655 is an apocalyptic number.

6351611655 is a deficient number, since it is larger than the sum of its proper divisors (4443937737).

6351611655 is a wasteful number, since it uses less digits than its factorization.

6351611655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465235 (or 1465218 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The square root of 6351611655 is about 79696.9990338407. Note that the first 3 decimals coincide. The cubic root of 6351611655 is about 1851.9445494604.

The spelling of 6351611655 in words is "six billion, three hundred fifty-one million, six hundred eleven thousand, six hundred fifty-five".