6421430550500 has 96 divisors (see below), whose sum is σ = 16029681857280. Its totient is φ = 2201387289600.

The previous prime is 6421430550499. The next prime is 6421430550511. The reversal of 6421430550500 is 50550341246.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32721671 + ... + 32917329.

It is an arithmetic number, because the mean of its divisors is an integer number (166975852680).

Almost surely, 2^{6421430550500} is an apocalyptic number.

It is an amenable number.

6421430550500 is an abundant number, since it is smaller than the sum of its proper divisors (9608251306780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6421430550500 is a wasteful number, since it uses less digits than its factorization.

6421430550500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205062 (or 205050 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 6421430550500 its reverse (50550341246), we get a palindrome (6471980891746).

The spelling of 6421430550500 in words is "six trillion, four hundred twenty-one billion, four hundred thirty million, five hundred fifty thousand, five hundred".