6421013603 has 4 divisors (see below), whose sum is σ = 6423845760. Its totient is φ = 6418181448.

The previous prime is 6421013597. The next prime is 6421013623. The reversal of 6421013603 is 3063101246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3063101246 = 2 ⋅1531550623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6421013603 is a prime.

It is a super-2 number, since 2×6421013603² = 82458831379822083218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6421013623) 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, 1412675 + ... + 1417212.

It is an arithmetic number, because the mean of its divisors is an integer number (1605961440).

Almost surely, 2^6421013603 is an apocalyptic number.

6421013603 is a deficient number, since it is larger than the sum of its proper divisors (2832157).

6421013603 is a wasteful number, since it uses less digits than its factorization.

6421013603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832156.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 6421013603 is about 80131.2273898260. The cubic root of 6421013603 is about 1858.6653240634.

Adding to 6421013603 its reverse (3063101246), we get a palindrome (9484114849).

The spelling of 6421013603 in words is "six billion, four hundred twenty-one million, thirteen thousand, six hundred three".