6253121663 has 4 divisors (see below), whose sum is σ = 6263323128. Its totient is φ = 6242920200.

The previous prime is 6253121659. The next prime is 6253121717. The reversal of 6253121663 is 3661213526.

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

It is a cyclic number.

It is not a de Polignac number, because 6253121663 - 2² = 6253121659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6253121603) 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, 5099813 + ... + 5101038.

It is an arithmetic number, because the mean of its divisors is an integer number (1565830782).

Almost surely, 2^6253121663 is an apocalyptic number.

6253121663 is a deficient number, since it is larger than the sum of its proper divisors (10201465).

6253121663 is a wasteful number, since it uses less digits than its factorization.

6253121663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10201464.

The product of its digits is 38880, while the sum is 35.

The square root of 6253121663 is about 79076.6821699039. The cubic root of 6253121663 is about 1842.3223730717.

The spelling of 6253121663 in words is "six billion, two hundred fifty-three million, one hundred twenty-one thousand, six hundred sixty-three".