6321215152 has 80 divisors (see below), whose sum is σ = 14196313600. Its totient is φ = 2670796800.

The previous prime is 6321215149. The next prime is 6321215171. The reversal of 6321215152 is 2515121236.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 6321215152.

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, 2349424 + ... + 2352112.

It is an arithmetic number, because the mean of its divisors is an integer number (177453920).

Almost surely, 2^6321215152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6321215152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7098156800).

6321215152 is an abundant number, since it is smaller than the sum of its proper divisors (7875098448).

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

6321215152 is a wasteful number, since it uses less digits than its factorization.

6321215152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994 (or 2988 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 6321215152 is about 79506.0699066430. The cubic root of 6321215152 is about 1848.9855799198.

Adding to 6321215152 its reverse (2515121236), we get a palindrome (8836336388).

The spelling of 6321215152 in words is "six billion, three hundred twenty-one million, two hundred fifteen thousand, one hundred fifty-two".