6216323402172 has 96 divisors (see below), whose sum is σ = 15725017405440. Its totient is φ = 1899957427200.

The previous prime is 6216323402161. The next prime is 6216323402183. The reversal of 6216323402172 is 2712043236126.

It is an interprime number because it is at equal distance from previous prime (6216323402161) and next prime (6216323402183).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 6216323402172.

It is a congruent number.

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, 14742993 + ... + 15158775.

It is an arithmetic number, because the mean of its divisors is an integer number (163802264640).

Almost surely, 2^{6216323402172} 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 6216323402172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7862508702720).

6216323402172 is an abundant number, since it is smaller than the sum of its proper divisors (9508694003268).

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

6216323402172 is a wasteful number, since it uses less digits than its factorization.

6216323402172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416443 (or 416441 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

Adding to 6216323402172 its reverse (2712043236126), we get a palindrome (8928366638298).

The spelling of 6216323402172 in words is "six trillion, two hundred sixteen billion, three hundred twenty-three million, four hundred two thousand, one hundred seventy-two".