6421748503 has 2 divisors, whose sum is σ = 6421748504. Its totient is φ = 6421748502.

The previous prime is 6421748491. The next prime is 6421748513. The reversal of 6421748503 is 3058471246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6421748503 - 2⁵ = 6421748471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6421748513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210874251 + 3210874252.

It is an arithmetic number, because the mean of its divisors is an integer number (3210874252).

Almost surely, 2^6421748503 is an apocalyptic number.

6421748503 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421748503 is an equidigital number, since it uses as much as digits as its factorization.

6421748503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 6421748503 is about 80135.8128616663. The cubic root of 6421748503 is about 1858.7362308871.

The spelling of 6421748503 in words is "six billion, four hundred twenty-one million, seven hundred forty-eight thousand, five hundred three".