216574799274 has 96 divisors (see below), whose sum is σ = 512448780480. Its totient is φ = 68363730432.

The previous prime is 216574799269. The next prime is 216574799303. The reversal of 216574799274 is 472997475612.

216574799274 is a `hidden beast` number, since 2 + 1 + 6 + 5 + 7 + 479 + 92 + 74 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41670444 + ... + 41675640.

It is an arithmetic number, because the mean of its divisors is an integer number (5338008130).

Almost surely, 2^216574799274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216574799274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256224390240).

216574799274 is an abundant number, since it is smaller than the sum of its proper divisors (295873981206).

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

216574799274 is a wasteful number, since it uses less digits than its factorization.

216574799274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746 (or 9734 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 216574799274 in words is "two hundred sixteen billion, five hundred seventy-four million, seven hundred ninety-nine thousand, two hundred seventy-four".