6281681053 has 4 divisors (see below), whose sum is σ = 6434892828. Its totient is φ = 6128469280.

The previous prime is 6281681047. The next prime is 6281681137. The reversal of 6281681053 is 3501861826.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1403776089 + 4877904964 = 37467^2 + 69842^2 .

It is a cyclic number.

It is not a de Polignac number, because 6281681053 - 2⁹ = 6281680541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6281680997 and 6281681015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6281687053) 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 3 ways as a sum of consecutive naturals, for example, 76605826 + ... + 76605907.

It is an arithmetic number, because the mean of its divisors is an integer number (1608723207).

Almost surely, 2^6281681053 is an apocalyptic number.

It is an amenable number.

6281681053 is a deficient number, since it is larger than the sum of its proper divisors (153211775).

6281681053 is a wasteful number, since it uses less digits than its factorization.

6281681053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153211774.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6281681053 is about 79257.0568025334. The cubic root of 6281681053 is about 1845.1228784967.

The spelling of 6281681053 in words is "six billion, two hundred eighty-one million, six hundred eighty-one thousand, fifty-three".