89257184021 has 2 divisors, whose sum is σ = 89257184022. Its totient is φ = 89257184020.

The previous prime is 89257183973. The next prime is 89257184033. The reversal of 89257184021 is 12048175298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60343922500 + 28913261521 = 245650^2 + 170039^2 .

It is a cyclic number.

It is not a de Polignac number, because 89257184021 - 2¹⁰ = 89257182997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89257184921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44628592010 + 44628592011.

It is an arithmetic number, because the mean of its divisors is an integer number (44628592011).

Almost surely, 2^89257184021 is an apocalyptic number.

It is an amenable number.

89257184021 is a deficient number, since it is larger than the sum of its proper divisors (1).

89257184021 is an equidigital number, since it uses as much as digits as its factorization.

89257184021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 89257184021 in words is "eighty-nine billion, two hundred fifty-seven million, one hundred eighty-four thousand, twenty-one".