6521902212 has 24 divisors (see below), whose sum is σ = 17391739456. Its totient is φ = 1863400608.

The previous prime is 6521902183. The next prime is 6521902213. The reversal of 6521902212 is 2122091256.

It is a self number, because there is not a number n which added to its sum of digits gives 6521902212.

It is not an unprimeable number, because it can be changed into a prime (6521902213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38820763 + ... + 38820930.

Almost surely, 2^6521902212 is an apocalyptic number.

It is an amenable number.

6521902212 is an abundant number, since it is smaller than the sum of its proper divisors (10869837244).

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

6521902212 is a wasteful number, since it uses less digits than its factorization.

6521902212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77641707 (or 77641705 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 6521902212 is about 80758.2950042904. The cubic root of 6521902212 is about 1868.3493886922.

Adding to 6521902212 its reverse (2122091256), we get a palindrome (8643993468).

The spelling of 6521902212 in words is "six billion, five hundred twenty-one million, nine hundred two thousand, two hundred twelve".