216616675275 has 576 divisors, whose sum is σ = 549064857600. Its totient is φ = 82791072000.

The previous prime is 216616675271. The next prime is 216616675277. The reversal of 216616675275 is 572576616612.

It is a happy number.

216616675275 is a `hidden beast` number, since 2 + 16 + 616 + 6 + 7 + 5 + 2 + 7 + 5 = 666.

It is not a de Polignac number, because 216616675275 - 2² = 216616675271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216616675271) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 799323390 + ... + 799323660.

It is an arithmetic number, because the mean of its divisors is an integer number (953237600).

Almost surely, 2^216616675275 is an apocalyptic number.

216616675275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216616675275 is an abundant number, since it is smaller than the sum of its proper divisors (332448182325).

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

216616675275 is a wasteful number, since it uses less digits than its factorization.

216616675275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 310 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 216616675275 in words is "two hundred sixteen billion, six hundred sixteen million, six hundred seventy-five thousand, two hundred seventy-five".