215946986696 has 64 divisors (see below), whose sum is σ = 470532860160. Its totient is φ = 90992160000.

The previous prime is 215946986641. The next prime is 215946986741. The reversal of 215946986696 is 696689649512.

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, 8701826 + ... + 8726606.

It is an arithmetic number, because the mean of its divisors is an integer number (7352075940).

Almost surely, 2^215946986696 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 215946986696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235266430080).

215946986696 is an abundant number, since it is smaller than the sum of its proper divisors (254585873464).

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

215946986696 is a wasteful number, since it uses less digits than its factorization.

215946986696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27406 (or 27402 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 71.

The spelling of 215946986696 in words is "two hundred fifteen billion, nine hundred forty-six million, nine hundred eighty-six thousand, six hundred ninety-six".