216345603876 has 24 divisors (see below), whose sum is σ = 505136175264. Its totient is φ = 72068091840.

The previous prime is 216345603839. The next prime is 216345603899. The reversal of 216345603876 is 678306543612.

It is a super-2 number, since 2×216345603876² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5869545 + ... + 5906288.

It is an arithmetic number, because the mean of its divisors is an integer number (21047340636).

Almost surely, 2^216345603876 is an apocalyptic number.

It is an amenable number.

216345603876 is an abundant number, since it is smaller than the sum of its proper divisors (288790571388).

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

216345603876 is a wasteful number, since it uses less digits than its factorization.

216345603876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11777371 (or 11777369 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 216345603876 in words is "two hundred sixteen billion, three hundred forty-five million, six hundred three thousand, eight hundred seventy-six".