866898502272 has 384 divisors, whose sum is σ = 2854362369600. Its totient is φ = 258767308800.

The previous prime is 866898502247. The next prime is 866898502291. The reversal of 866898502272 is 272205898668.

It is a tau number, because it is divible by the number of its divisors (384).

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, 28002322 + ... + 28033262.

Almost surely, 2^866898502272 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 866898502272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427181184800).

866898502272 is an abundant number, since it is smaller than the sum of its proper divisors (1987463867328).

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

866898502272 is a wasteful number, since it uses less digits than its factorization.

866898502272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31053 (or 31024 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 866898502272 in words is "eight hundred sixty-six billion, eight hundred ninety-eight million, five hundred two thousand, two hundred seventy-two".