84068892250281 has 27 divisors (see below), whose sum is σ = 121579831509591. Its totient is φ = 55978169929344.

The previous prime is 84068892250241. The next prime is 84068892250309. The reversal of 84068892250281 is 18205229886048.

The square root of 84068892250281 is 9168909.

It is a perfect power (a square), and thus also a powerful number.

84068892250281 is a `hidden beast` number, since 8 + 40 + 6 + 8 + 8 + 9 + 2 + 2 + 502 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34403609280681 + 49665282969600 = 5865459^2 + 7047360^2 .

It is a de Polignac number, because none of the positive numbers 2^k-84068892250281 is a prime.

It is a super-2 number, since 2×84068892250281² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84068892250201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 34355900800 + ... + 34355903246.

Almost surely, 2^{84068892250281} is an apocalyptic number.

84068892250281 is the 9168909-th square number.

84068892250281 is the 4584455-th centered octagonal number.

It is an amenable number.

84068892250281 is a deficient number, since it is larger than the sum of its proper divisors (37510939259310).

84068892250281 is an frugal number, since it uses more digits than its factorization.

84068892250281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 63.

The spelling of 84068892250281 in words is "eighty-four trillion, sixty-eight billion, eight hundred ninety-two million, two hundred fifty thousand, two hundred eighty-one".