6450348681 has 96 divisors (see below), whose sum is σ = 11378914560. Its totient is φ = 3599769600.

The previous prime is 6450348679. The next prime is 6450348721. The reversal of 6450348681 is 1868430546.

6450348681 is a `hidden beast` number, since 64 + 503 + 4 + 8 + 6 + 81 = 666.

It is not a de Polignac number, because 6450348681 - 2¹ = 6450348679 is a prime.

It is a super-2 number, since 2×6450348681² = 83213996212956879522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6450340681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20740516 + ... + 20740826.

It is an arithmetic number, because the mean of its divisors is an integer number (118530360).

Almost surely, 2^6450348681 is an apocalyptic number.

6450348681 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6450348681 is a deficient number, since it is larger than the sum of its proper divisors (4928565879).

6450348681 is a wasteful number, since it uses less digits than its factorization.

6450348681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 6450348681 is about 80314.0627847950. The cubic root of 6450348681 is about 1861.4915273551.

The spelling of 6450348681 in words is "six billion, four hundred fifty million, three hundred forty-eight thousand, six hundred eighty-one".