6420213530 has 32 divisors (see below), whose sum is σ = 11600993664. Its totient is φ = 2558195136.

The previous prime is 6420213511. The next prime is 6420213577. The reversal of 6420213530 is 353120246.

It is a self number, because there is not a number n which added to its sum of digits gives 6420213530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4299464 + ... + 4300956.

It is an arithmetic number, because the mean of its divisors is an integer number (362531052).

Almost surely, 2^6420213530 is an apocalyptic number.

6420213530 is a deficient number, since it is larger than the sum of its proper divisors (5180780134).

6420213530 is a wasteful number, since it uses less digits than its factorization.

6420213530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 6420213530 is about 80126.2349670818. The cubic root of 6420213530 is about 1858.5881228715.

Adding to 6420213530 its reverse (353120246), we get a palindrome (6773333776).

The spelling of 6420213530 in words is "six billion, four hundred twenty million, two hundred thirteen thousand, five hundred thirty".