7916278216 has 64 divisors (see below), whose sum is σ = 18630000000. Its totient is φ = 3063528960.

The previous prime is 7916278189. The next prime is 7916278231. The reversal of 7916278216 is 6128726197.

It is a super-2 number, since 2×7916278216² (a number of 21 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 7916278216.

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, 48660 + ... + 134908.

It is an arithmetic number, because the mean of its divisors is an integer number (291093750).

Almost surely, 2^7916278216 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 7916278216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9315000000).

7916278216 is an abundant number, since it is smaller than the sum of its proper divisors (10713721784).

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

7916278216 is a wasteful number, since it uses less digits than its factorization.

7916278216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86422 (or 86418 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 7916278216 is about 88973.4691691855. The cubic root of 7916278216 is about 1992.9987041944.

The spelling of 7916278216 in words is "seven billion, nine hundred sixteen million, two hundred seventy-eight thousand, two hundred sixteen".