89930494282561 has 3 divisors (see below), whose sum is σ = 89930503765731. Its totient is φ = 89930484799392.

The previous prime is 89930494282529. The next prime is 89930494282597. The reversal of 89930494282561 is 16528249403998.

The square root of 89930494282561 is 9483169.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 70109121788161 + 19821372494400 = 8373119^2 + 4452120^2 .

It is not a de Polignac number, because 89930494282561 - 2⁵ = 89930494282529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89930494282511) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4741585 + ... + 14224753.

It is an arithmetic number, because the mean of its divisors is an integer number (29976834588577).

Almost surely, 2^{89930494282561} is an apocalyptic number.

89930494282561 is the 9483169-th square number.

89930494282561 is the 4741585-th centered octagonal number.

It is an amenable number.

89930494282561 is a deficient number, since it is larger than the sum of its proper divisors (9483170).

89930494282561 is an frugal number, since it uses more digits than its factorization.

89930494282561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18966338 (or 9483169 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 70.

The spelling of 89930494282561 in words is "eighty-nine trillion, nine hundred thirty billion, four hundred ninety-four million, two hundred eighty-two thousand, five hundred sixty-one".