6421748498 has 16 divisors (see below), whose sum is σ = 10706587776. Its totient is φ = 2863901040.

The previous prime is 6421748491. The next prime is 6421748503. The reversal of 6421748498 is 8948471246.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6421748491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2752586 + ... + 2754917.

It is an arithmetic number, because the mean of its divisors is an integer number (669161736).

Almost surely, 2^6421748498 is an apocalyptic number.

6421748498 is a deficient number, since it is larger than the sum of its proper divisors (4284839278).

6421748498 is a wasteful number, since it uses less digits than its factorization.

6421748498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507569.

The product of its digits is 3096576, while the sum is 53.

The square root of 6421748498 is about 80135.8128304692. The cubic root of 6421748498 is about 1858.7362304047.

It can be divided in two parts, 6421748 and 498, that added together give a palindrome (6422246).

The spelling of 6421748498 in words is "six billion, four hundred twenty-one million, seven hundred forty-eight thousand, four hundred ninety-eight".