6442832215516 has 24 divisors (see below), whose sum is σ = 11335795032800. Its totient is φ = 3204045580032.

The previous prime is 6442832215513. The next prime is 6442832215571. The reversal of 6442832215516 is 6155122382446.

It is a super-2 number, since 2×6442832215516² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6442832215516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442832215513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667840 + ... + 3651256.

Almost surely, 2^{6442832215516} is an apocalyptic number.

It is an amenable number.

6442832215516 is a deficient number, since it is larger than the sum of its proper divisors (4892962817284).

6442832215516 is a wasteful number, since it uses less digits than its factorization.

6442832215516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986333 (or 2986331 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The spelling of 6442832215516 in words is "six trillion, four hundred forty-two billion, eight hundred thirty-two million, two hundred fifteen thousand, five hundred sixteen".